To shout out in order to summon (a person). / To ask for in a loud voice. / (figuratively) To request, demand. / To necessitate, demand. / To stop at a place and ask for (someone).

(transitive) To tempt (someone or something); to beckon; to be difficult to resist.

A telephone conversation; a phone call. / An instance of calling someone on the telephone. / A short visit, usually for social purposes. / (nautical) A visit by a ship or boat to a port.

Alternative form of will call

Initialism of computer-assisted language learning.

Available to be summoned.

(obsolete) available when requested

(attributive) on call

(idiomatic, transitive) To visit (a person); to pay a call to. / (idiomatic, transitive) To select (a student in a classroom, etc.) to provide an answer.

(intransitive, copulative) To communicate with a base etc, by telephone. / (transitive) To report; communicate (a message) by telephone or similar. / (intransitive) To pay a short visit.