Green’s Dictionary of Slang

bob n.3

[bobstick n.]

1. [18C] a spirituous liquor, e.g. gin, rum, i.e. a shilling’s (5p) worth.

2. [late 18C+] a shilling (5p).

3. [early 19C] (UK und.) a counterfeit shilling.

4. [mid-19C+] money in general; esp. as a few bob.

5. [1930s+] (US) $1.

In derivatives

bobby (adj.)

[1900s] (UK und.) counterfeit.

In compounds

bob in (n.) (Aus./N.Z.)

1. [late 19C+] the payment of a shilling (5p) into a common pot, esp. as used for buying drinks; also attrib.

2. [mid-19C+] (Aus.) a dicing game in which all players contribute a shilling (5p); the winner then buys the round of drinks.

bob-in (n.)

[late 19C] (N.Z.) a collection of money (nominally a shilling per head), e.g. to pay for drinks.

In phrases

bob a nob (n.) [nob n.1 (1)]

[19C+] one shilling each person, used when estimating the cost of meals, outings, tickets etc; also attrib., with sesne of second-rate (see cite 1894).

just the shiny bob (also just the shiny (shilling))

[20C+] (Aus.) a general phr. of approval.

royal bob (n.)

[18C] gin.