Definition of throck in English:

throck

(also drock, drot)

Pronunciation /θrɒk/

noun

dialect British, Midlands English, Welsh
  • The share-beam of a plough; = plough-head . Formerly also: †an upright beam connecting the ground-wrist and earthboard of a plough to the handle (obsolete).

    Originally made of wood, later of iron.

Origin

Old English; earliest use found in Harley Glossary. Origin unknown.