Green’s Dictionary of Slang

shout n.

also call, shoot
[shout v. (1)]

1. [mid-19C+] (Aus./N.Z.) in context of public drinking.

(a) a round of drinks.

(b) one’s turn to order a round of drinks; thus your shout; my shout; stand the shout; thus shout-dodger, one who avoids his turn.

(c) a drink.

(d) in fig. use, a ‘turn’.

2. [late 19C+] (US black) an act of crying out or ‘speaking in tongues’, usu. in church, as the apparent result of being possessed by spirits.

3. [1920s+] (US black) a party, esp. one where the guests buy their refreshments to help pay the rent.

4. [1920s+] (US black) a dance.

5. [1970s] a piece of information, a ‘tip-off’.

In phrases

give someone a shout (v.) [1970s+]

1. to get in touch with, usu. by telephone.

2. to give someone the power of decision.

3. (W.I./US) to pay a casual visit.

go on the shout (v.)

[late 19C] to go out drinking.