Noun
(dated, nautical) The period of work on board ship for which the seamen have been paid in advance (usually a month's wages), the end of this term being celebrated by parading a straw horse about the decks.
(Australia, rhyming slang) Tomato sauce.
Source: en.wiktionary.orgAlimony is like buying hay for a dead horse. Groucho Marx
I'd call him a sadistic, hippophilic necrophile, but that would be beating a dead horse. Woody Allen
You cannot kickstart a dead horse. Thom Yorke
You've got to stop whipping a dead horse sometime. Jim Knight
No use in flogging a dead horse. German Proverb
Try to save the dead horse as if it is still alive. Chinese Proverb