(transitive) To cause to take place. / (transitive) To accomplish, achieve.

Alternative form of arse around / (obsolete, slang) To turn round.

(slang) The wrong way round; exactly opposite to that which is desirable; contrary; conceptually inverted; wrong.

(nautical) Used by the helm announcing to the crew that (s)he is ready to change tack.

To initiate or begin some action. / To attack.

(transitive) To busy oneself with. / (intransitive) To tackle (a problem or task). / (intransitive) To circulate (in).

(military) Alternative form of about-face

(intransitive, military) To turn to face the opposite direction.

(Britain, military) Of a formation of soldiers, to reverse the direction in which they are facing; an about face. / (Britain, figuratively, idiomatic) A complete change of opinion, direction, etc.

(military) Alternative form of about-face