dial. [OE. þroc, of unknown origin.] In full plough-throck: The share-beam; PLOUGHHEAD 1.

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a. 1000.  Ags. Gloss., in Wr.-Wülcker, 219/6. Dentale, s. est aratri pars prima in qua nomer inducitur quasi dens, sule-reost, uel þroc.

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1649.  Blithe, Eng. Improv. Impr., xxviii. (1653), 190. For the Plough-head, some call them the Plough-throck, some the Plough-chip.

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1688.  R. Holme, Armoury, III. 333/2. The Throck [of a Plow] is the piece of Timber on which the Suck is fixed.

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1893.  S. E. Worc. Gloss., Throck, the lower part of a (wooden) plough. On the end of the throck the ploughshare is fixed.

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