WordNet sense 1 (a demand by a broker that a customer deposit enough to bring his margin up to the minimum requirement):

margin call

WordNet sense 2 (a demand especially in the phrase):

claim

WordNet sense 3 (a loud utterance; often in protest or opposition):

cry, outcry, shout, vociferation, yell

WordNet sense 4 (the characteristic sound produced by a bird):

song, birdcall, birdsong

WordNet sense 5 (a telephone connection):

phone call, telephone call

WordNet sense 6 (greet, as with a prescribed form, title, or name):

address, address

WordNet sense 7 (pay a brief visit):

visit, call in

WordNet sense 8 (make a demand, as for a card or a suit or a show of hands):

bid

WordNet sense 9 (give the calls (to the dancers) for a square dance):

call off

WordNet sense 10 (assign a specified (usually proper) proper name to):

name

WordNet sense 11 (make a prediction about; tell in advance):

anticipate, forebode, foretell, predict, prognosticate, promise

WordNet sense 12 (utter a sudden loud cry):

holler, scream, squall, hollo, shout out

WordNet sense 13 (order, request, or command to come):

send for

WordNet sense 14 (get or try to get into communication (with someone) by telephone):

phone, ring, telephone, call up

WordNet sense 15 (the option to buy a given stock (or stock index or commodity future) at a given price before a given date):

call option