Webster’s Revised Unabridged Dictionary · 1913
Cosset
Cos′set (k?s′s?t), n. [Cf. AS. cotsetla cottager, G. kossat, kothsasse, fr. kot, koth E. (cot) hut, and cf. also E. cade, a., cot a cade lamb.] A lamb reared without the aid of the dam. Hence: A pet, in general.
Cos′set, v. t. To treat as a pet; to fondle.
She was cosseted and posseted and prayed over and made much of. O. W. Holmes.