| birdcall | (noun) a device for imitating a birdcall | - |
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| (noun) the characteristic sound produced by a bird | Synonyms: birdsong, call, song |
| call | (noun) (sports) the decision made by an umpire or referee | - |
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| (noun) a visit in an official or professional capacity | - |
| (noun) a brief social visit | - |
| (noun) the option to buy a given stock (or stock index or commodity future) at a given price before a given date | Synonyms: call option |
| (noun) a method of contacting a person by phone | Synonyms: phone call, telephone call |
| (noun) a loud utterance; often in protest or opposition | Synonyms: cry, outcry, shout, vociferation, yell |
| (noun) the characteristic sound produced by a bird | Synonyms: birdcall, birdsong, song |
| (noun) a request | - |
| (noun) a demand | Synonyms: claim |
| (noun) a demand for a show of hands in a card game | - |
| (noun) an instruction that interrupts the program being executed | - |
| (noun) a demand by a broker that a customer deposit enough to bring his margin up to the minimum requirement | Synonyms: margin call |
| catcall | (noun) a cry expressing disapproval | - |
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| overcall | (noun) (bridge) a bid that is higher than your opponent's bid (especially when your partner has not bid at all and your bid exceeds the value of your hand) | Synonyms: overbid |
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| recall | (noun) the act of removing an official by petition | - |
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| (noun) the process of remembering (especially the process of recovering information by mental effort) | Synonyms: recollection, reminiscence |
| (noun) a call to return | - |
| (noun) a bugle call that signals troops to return | - |
| (noun) a request by the manufacturer of a defective product to return the product (as for replacement or repair) | Synonyms: callback |
| robocall | (noun) An phone call made by an automated service | - |
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