diddle

Concise Oxford English Dictionary © 2008 Oxford University Press:
diddle/ˈdɪdl/

▶verb informal

• 1 cheat or swindle.

• 2 N. Amer. waste time.

• 3 vulgar slang, chiefly N. Amer. have sex with.

– derivatives
diddler noun.

– origin C19: prob. from the name of Jeremy Diddler, a character in the farce Raising the Wind (1803) who constantly borrowed small sums of money.