Green’s Dictionary of Slang

dip v.2

1. [early 19C+] to pick a pocket.

2. [late 19C+] to rob a till; thus dipping n.

3. [1940s+] to steal, to take away, e.g. a prostitute’s clients; thus dipping n.

In phrases

dip-in (n.)

[mid–19C] (UK Und.) an act of sexual intercorse.

dip into (v.)

1. [early 19C] to pick a pocket.

2. [mid-19C] (US) to attack physically.

3. [1950s–70s] to have sexual intercourse.

SE in slang uses

In compounds

dip-around (n.)

[1960s–70s] (Aus.) an act of urination.

dip-dunk (n.)

[1990s+] (US) an insignificant, foolish or dull person; also adj. use meaning foolish.

dipstick

see separate entries.

In phrases

dip one’s bill (v.) (also dip the bill) [bill n.1 (2)]

1. [late 17C–mid-18C] to be mildly tipsy, to be nearly drunk.

2. [1930s–60s] to consume, usu. a drink.

dip one’s lid (v.)

see under lid n.

dip one’s mouth/nose in someone’s business (v.) [var. on SE poke one’s nose in]

[20C+] (W.I.) to interfere where one’s interest is not required.

dip the fly (v.) [the ‘dipping’ or lowering of the trouser fly before intercourse]

[1980s+] (US black) of a man, to have sexual intercourse.

In exclamations

dip your eye!

[1950s] (Aus.) a dismissive retort.