Webster's Revised Unabridged Dictionary · 1913

Cosset

Cosset (k?s"s?t) , noun

[Compare Anglo-Saxon cotsetla cottager, German kossat, kothsasse, from kot, koth English (cot) hut, and compare also English cade, a., cot a cade lamb.]

A lamb reared without the aid of the dam. Hence: A pet, in general.

Cosset , transitive verb

To treat as a pet; to fondle.
She was cosseted and posseted and prayed over and made much of. — O. W. Holmes