(figuratively) Appeal, urgent call to action.

plural of call graph

(computing) A directed graph that represents relationships between called and calling subroutines in a computer program, used in code analysis.

(poker) To check and then call a bet by another player in the same betting round.

(poker) A call made by a player who checked previously in the same betting round.

(broadcasting) Call sign.

Use a telephone to request the arrival of a police officer.

plural of call leaf

a leaf folded and used in the mouth as a vibrating reed to imitate bird calls

(ornithology) A call made between birds in a flock or a pair in order to maintain contact with one another when foraging, flying, etc.