a monetary gift or tip. Wilkes records a slightly earlier (1948) variant 'sling back' AUSTRALIA, 1950.

in horse racing, a gratuity given the jockey and attendants by the owner after a win AUSTRIA, 1989.

a bribe or illegal payment AUSTRALIA, 1948.► beat it for the slingto fail to appear in court AUSTRALIA, 1975.► in the slingsaid of a woman experiencing her menstrual period US, 1954

to throw something (or someone) in a specific direction; hence to pass something from one person to another. Common in C14 and C15, now dialect or colloquial UK, 2002.

(to discard or abandon) someone or something; to quit something UK, 1902.

to pay a tip to someone AUSTRALIA, 1875.

to pay a bribe to someone AUSTRALIA, 1939.

to sell illegal drugs US, 2001.

to engage in promiscuous sexual behaviour BAHAMAS, 1982.► sling hashto work as a waitress or short-order cook US, 1906.► sling inkto tattoo US, 1989.► sling your hookto go, to leave. A naval derivation, perhaps inspired by slinging grappling hooks preparatory to swinging across to another ship. Later use seems to be mainly imperative UK, 1874