This is one of the most comprehensive lists I have found containing Japanese terminology related to Aikido. I have taken this list from, and give due credit to, The United States Center of Real Aikido (http://www.uscra.info/aikido_info.htm) and I encourage the reader to explore this link as it contains a plethora of additional information including backgrounds of different forms of Aikido and other martial arts.

COMMON ATTACKS: 

KATATE TORI = One hand holding one hand.
MOROTE TORI = Two hands holding one hand.
KATA TORI = Shoulder hold.
RYO KATA TORI = Grabbing both shoulders.
RYOTE TORI = Two hands holding two hands.
MUNE DORI = One or two hand lapel hold.
HIJI TORI = Elbow grab.
USHIRO TEKUBI TORI = Wrist grab from the back.
USHIRO RYOTE TORI = As above from the back.
USHIRO RYO KATA TORI = As above from the back.
USHIRO KUBI SHIME = Rear choke.
SHOMEN UCHI = Overhead strike to the head.
YOKOMEN UCHI = Diagonal strike to the side of the head.
TSUKI = Straight thrust (punch), esp. to the midsection

BASIC TECHNIQUES:

IKKYO = OMOTE and URA (IRIMI and TENKAN)
NIKYO = OMOTE and URA (IRIMI and TENKAN)
SANKYO = OMOTE and URA (IRIMI and TENKAN)
YONKYO = OMOTE and URA (IRIMI and TENKAN)
GOKYO = OMOTE and URA (IRIMI and TENKAN)

THROWS:

IRIMI NAGE = Entering throw ("20 year" technique).
JUJI NAGE = Arm entwining throw.
KAITEN NAGE = Rotary throw. UCHI and SOTO, OMOTE and URA (IRIMI and TENKAN)
KOKYU NAGE = Breath throws.
KOSHI NAGE = Hip throw.
KOTE GAESHI = Wrist turn-out.
SHIHO NAGE = "Four direction" throw.
SUMIOTOSHI = "Corner drop." OMOTE and URA (IRIMI and TENKAN).
TENCHI NAGE = "Heaven and earth" throw. OMOTE and URA (IRIMI and TENKAN) 

Attacks

Striking:

Atemi

Strike to a vital point

Chudan-zuki

A punch to the abdominal region

Gedan-zuki

Downward punch

Gyaku-uchi

Any reverse strike

Gyaku-zuki

Punching with the rear hand

Jodan-zuki

Upper strike

Kaeshi-zuki

Counter thrust

Katate-uchi

One-handed strike

Men-uchi

Strike to head

Mune tsuki

Thrust toward knot on obi

Oi-zuki

A step-punch

Shomen uchi

Overhead strike to the head.

Tsuki

In Aikido, usually a Chudan Oi-zuki

Uchi

Inside; strike

Yokomen uchi

Diagonal strike to the side of the head.

Yoko-uchi

A sideward strike

Holds:

Gyakute-dori

To grasp with one's hand reversed; to grasp and opponents right wrist with your left hand

Katate dori

One hand holding one hand.

Kosadori

hand grab (katatedori ai-hanmi)

Morote dori

Two hands holding one hand.

Kata dori

Shoulder hold

Ryokata dori

Grabbing both shoulders.

Ryote dori

Two hands holding two hands.

Mune dori

One or two hand lapel hold.

Hiji dori

Elbow grab

Sode dori

Sleeve grab

Ushiro eri-dori

Neck grab from the back (usually the collar :-)

Ushiro tekubi dori

Wrist grab from the back.

Ushiro ryote dori

As above from the back.

Ushiro ryokata dori

As above from the back.

Ushiro kubi shime

Rear choke.

 

Body Parts

Body Parts:

 

Hara

The abdomen, stomach

Abara

The ribs

Ago

Jaw

Ashi

Leg

Ashikubi

Ankle

Atama

Head

Chototsu

Atemi point between the eyes

Daitai

The thigh

Denko

Atemi point at the floating ribs

Dokko

Pressure point behind the ear

Empi

The elbow

Eri

Lapel; collar

Fukuto

Atemi point just above inside of knee

Ganmen

The face

Gekon

Pressure point below lower lip

Gokoku

Pressure point in fleshy area between thumb and forefinger

Haishu

Back of the hand

Haito

Ridgehand

Haiwan

Back of forearm

Hiji

Elbow

Hiji-zume

Atemi point on inside of elbow

Hitai

Forehead

Ippon-ken

An one-knuckle fist

Jinchu

Pressure point on upper lip below nose

Jintai

The body

Jinkai-kyusho

Vital points on the human body

Juizo

The kidney area

Junchu

Atemi point on the upper lip

Kakato

The heel of the foot

Kakuto

Back of the wrist (for a strike)

Kashi

Legs

Katate

One hand

Keichu

Atemi point on back of neck

Kenkokotsu

Shoulder blades

Kikan

Trachea

Koko

Area between thumb and forefinger

Kote

Wrist

Kubi

Neck

Kubi-naka

Atemi point at base of skull

Kyusho

Vital point on body

Mata

The thigh; the groin

Men

Head

Mikazuki

Atemi at corner of jaw

Mimi

Ears

Morote

Both hands

Mukozune

Atemi point in middle of shin

Mune

Chest

Murasame

Pressure points on each side of neck behind collar bone

Naike

Pressure point on inside of ankle

Nukite

Ends of stiffened fingers

Seika-tanden

Lower abdomen

Seiken

Front of fist

Seikichu

The spine

Senaka

The back of the body

Shintai

The body

Shita hara

Lower abdomen

Shomen

Face

Shuhai

Back of the hand

Shuto

Edge of hand

Sode

Sleeve

Sokei

Groin

Sokuso

Tips of toes (for kicking)

Sokutei

Bottom of heel

Sokuto

Edge of foot

Tanden

Abdomen

Tegatana

The arm as sword

Teisho

Heel of the hand

Tekubi

Wrist

Te-no-hira

Palm of hand

Tento

Atemi point on top of head

Tettsui

Hammer fist

Te-ura

Inside of wrist

Ude

The arm

Uraken

Back of fist

Waki

Side; armpit

Wakikage

Atemi point in armpit

Yokomen

Side of the head

Yubi

Finger

Zengaku

Forehead

Zenshin

The entire body

Zenwan

Forearm

 

 Counting

Counting:

 

1

Ichi

one

2

Ni

two

3

San

three

4

Shi (or yon)

four

5

Go

five