To listen attentively.

(idiomatic, intransitive) To prepare oneself for something demanding.

(idiomatic) To hold up one's end of a bargain; to fulfill one's promise or obligation.

(intransitive) To raise both hands in the air in an exasperated manner. / (intransitive, idiomatic) To cease an attempt because it is perceived as doomed.

Used other than figuratively or idiomatically: see roll, up, one's, sleeves. / (idiomatic) To prepare to work.

plural of ace up one's sleeve

(idiomatic, vulgar) having an excessively high opinion of oneself.

(UK) A traditional house with one room upstairs and one room downstairs.

plural of one-up-one-down

Alternative form of zip one's lip