to use one's head

(judo) judoka, A practitioner of the Japanese martial art of judo.

(judo) a set of wear in Japanese martial art of judo, e.g. top-wear, bottom-wear and belt (obi).

judo gymnasium, judo hall

deck, knock down

(sumo) abisetaoshi, backward force-down; a kimarite in which the attacker forces his opponent over backwards by throwing his weight into him from a grappling position

(colloquial) to make love

technician, engineer

science and technology

technical