Ai: Harmony, Peace
Aikidoka: One who practices Aikido
Atemi: Fake punch with the purpose of distracting uke while a technique is executed.
Bokken: Wooden practice katana (samurai sword).
Dan: Grade of black belt, as in 1st dan, 2nd dan, etc.
Hanmi: Stance. Proper martial way of standing
Hanmi-handachi: Half-standing stance where Uke is standing, and nage is sitting in seiza.
Hiji Elbow
Jo: Stick (staff)
Ki: Energy, spirit
Kyu: Belt rank
Nage: Throw. Also the defender in Aikido (the one doing the techniques).
Omote: Front side
Onegaishimasu Please do me the honor...Traditional phrase used at the start of practice as well as the start of each paired exercise.
O'Sensei: Ueshiba Morihei Sensei. The founder of Aikido.
Randori: Chaos throw. One nage defends against several ukes.
Seiza: Sitting on top of one's feet with both knees in front, together
Sensei: Teacher
Shikko: Knee walking
Shodan: The first level of black belt.
Shomen: The front of the head. Also the front of the dojo. Also, the various artifacts at the front of the dojo, sometimes the picture of O'Sensei in particular.
Soto: Outside
Suwari waza: Sitting technique
Tanto: Wooden knife used for training purposes.
Uke: The partner receiving a technique in practice. The one playing the part of an attacker.
Ukemi: What uke does, meaning how to take the techniques without harm. The art of falling.
Ura: Denotes a technique performed while nage is behind or traveling behind uke. As opposed to Omote.
Waza: Technique