Perfected; practiced ease and confidence.

(informal, vulgar euphemistic) To urinate.

Alternative form of à la carte

Alternative form of à la carte

Alternative spelling of abbé

plural of abacus

A move in square dancing in which two dancers face each other, then step forward and left until they have right shoulders adjacent, then move to a position where they are back to back, then move to have left shoulders adjacent, then return to facing each other.

Back to back.

(slang) An atomic bomb; a weapon that derives its energy from nuclear reactions and has enormous destructive power.

(slang) To bomb with an atom bomb.