On a vehicle or vessel; aboard. / Agreeing or supporting; having been taken on board.

Matching each member of one set with exactly one member of another set. / (chiefly UK) Involving direct communication between two people.

A personal relationship between two people.

(cricket) The act of a captain forcing the other side to bat again immediately after their first innings.

To follow in sequence; to come next. / (cricket, of a team) To bat their second innings immediately after their first innings.

(idiomatic) Able to readily understand things; aware and intelligent.

(idiomatic) In rapport or complete accord.

(idiomatic) To be very careful to behave correctly.

(idiomatic) An accomplishment; particularly one that is flaunted or boasted of. / Used other than figuratively or idiomatically: see feather, cap.

Alternative form of on and off / (nautical) On different tacks, now toward, and now away from, the land.