? var. of CULL, fool, dupe, simpleton.
1657. T. Jordan, Walks Isling., II. xii. We are no colls you, you must not flam us.
1674. Cotton, Compl. Gamester, in Singer, Hist. Cards (1816), 334. These rooks discover some inexperienced young gentleman, unskilled in the quibbles and devices there practised; these they call lambs or colls.