-ock

Etymology

From Middle English -ock, from Old English -oc, -uc, from Proto-Germanic *-ukaz ("diminutive suffix"). Akin to Old Saxon -ik, Middle Low German -ken, Middle Dutch -kin, Old Norse -kr. More at -kin.

Suffix

1. Forming nouns from nouns, originally with a diminutive sense.hillock (""), haddock, bullock, maddock, paddock