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| the offspring of a zebra and a donkey. |
| a stew of meat, vegetables, potatoes, etc. |
| keep on | |
| —vb (foll by about) (foll by at) | |
| 1. | to continue or persist in (doing something): keep on running |
| 2. | (tr) to continue to wear |
| 3. | (tr) to continue to employ: the firm kept on only ten men |
| 4. | to persist in talking (about) |
| 5. | to nag (a person) |
"The word prob. belongs primarily to the vulgar and non-literary stratum of the language; but it comes up suddenly into literary use c.1000, and that in many senses, indicating considerable previous development." [OED]Meaning "financially support and privately control" (usually in ref. to mistresses) is from 1560. The noun meaning "innermost stronghold of a tower" is from 1586, perhaps a translation of It. tenazza, with a notion of "that which keeps" (someone or something); the sense of "food required to keep a person or animal" is attested from 1801. Keepsake is first recorded 1790, on model of namesake; thus an object kept for the sake of the giver. For keeps "completely, for good" is Amer.Eng. colloquial, from 1861. Keeper "one who has charge of some person or thing, warden" is from c.1300; sense of "one who carries on some business" is from c.1440.
keep on
Continue, persist, as in They kept on singing all night. [Late 1500s]
Maintain an existing situation, as in After Mr. Brown died, the housekeeper wondered if she would be kept on. [Mid-1600s]
Cause to stay on or remain attached, as in Keep your coat on; it's cold in here. [Late 1800s]