bridge, n. — Green’s Dictionary of Slang

bridge n.

[differing senses of SE bridge a gap]

1. (Aus.) a plausible excuse.

1922		C. Drew Rogues and Ruses (1923) 88: The usual gang of shifties that collect around a man when he first opens up in a race springs from nowhere, and Cracker gives them a bridge [ibid.] 17: ‘What’s wrong with havin’ a game of poker,’ says he, giving ’em the old, old bridge.
1930		Sun (Sydney) 22 Oct. 15/6: A Voice: He’s gotta dam cheek. Mr. Lang: He’s got more than that. ‘Give him the bridge,’ suggested a wag. ‘Give him the boot!’ said Mr. Lang.
1959		Baker Drum.

2. (N.Z.) a glance, a look.

1984		Partridge DSUE (8th edn).
2003		McGill Reed Dict. of N.Z. Sl. 34: bridge A glance, c1920s.

3. (Aus.) an introduction.

1943

chuck a bridge (v.) [SE bridge; i.e. the crotch of her knickers]

(Aus./N.Z.) of a woman, to reveal her underwear (inadvertently or otherwise).

1982		N. Keesing Lily on the Dustbin 176: A girl who ‘chucks a bridge’ sits with her underpants visible.
2003		McGill Reed Dict. of N.Z. Sl. 34: If a woman happens to chuck a bridge she has flashed her underwear. ANZ.

make a bridge of someone’s nose (v.)

see under nose n.