to cocker is a form of:

Cocker



ENGLISH MEANING
noun
1.
One given to cockfighting.
2.
A small dog of the spaniel kind, used for starting up woodcocks, etc.
3.
A rustic high shoe or half-boots.
verb
1.
(TRANSITIVE) To treat with too great tenderness; to fondle; to indulge; to pamper.