(obsolete) Alternative form of until the cows come home.

(informal) Any badly played or discordant piece of music.

plural of tune the old cow died of

(humorous) For a very long period of time.

(US, of raining, pissing, etc) Heavily, copiously, with a great deluge.

(US, of rain or other liquid falling, vulgar) Heavily; copiously (and often loudly).

Synonym of you never miss the water till the well runs dry

Do not expect somebody to make a costly commitment if it will give them nothing they do not already have; used especially as a warning against having sexual intercourse before marriage.