A lamb brought up without the aid of the dam.--Bailey. This word is used in New England in this sense, and also to signify a favorite or darling.
And if thou wilt bewayle my woful teene,
I shall give thee yond cosset for thy payne.
Spenser.
·vt To treat as a pet; to <<Fondle>>. II. Cosset ·noun A lamb reared without the aid of the dam. He...
Webster's Dictionary of the English Language
A foundling. Cosset colt or lamb; a colt or lamb brought up by hand. ...
Dictionary of The Vulgar Tongue by Francis Grose
colt a cade lamb or colt brought up by hand. Norf. and SufF. ...
A glossary of provincial and local words used in England by Francis Grose