keyhole

n.锁跟，钥匙孔

kerb drill, kerb-crawling, kerbstone, kerchief, kerfuffle, kernel, kerosene, kerosene, kerosine (also kerosine), kestrel, ketch, ketchup, kettle, kettledrum, key, key (also cay), key money, key signature, key-pad, key-ring, keyboard, keynote, keystone, KG, KGB, khaki, kHz, kibbutz, kibbutznik, kick, kick-off, kick-start, kickback, kicker, kid, kid-glove, kid...into doing, kiddy (also kiddie), kidnap, kidnaper, kidnapper,