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carnock

In England, ? – 19ᵗʰ century, a unit of dry capacity for grain = 4 bushels. Also spelled curnock and cornook. By the 19ᵗʰ century, it was reported in Worcestershire as dialect: for barley and oats, 4 bushels; for wheat, 3 bushels or 190 pounds.

James Britten.
Old Country and Farming Words.
English Dialect Society, number 30.
London: Trübner and Co., 1880.

Page 170.

sources

All kinde of graines is measured by Troy weight of which 8 pounds makes a gallon, whereof are made Pints, Quarts, Pottles, Gallons, Pecks, Halfe-bushels, Bushels, Strikes or halfe coombs, Cornoockes, Coombes or halfe Quarters, Quarters or Seames & Lasts, whose quantity behold in the insuing Table.

Arthur Hopton.
A Conservancy of Yeares: Containing a new, easie, and most exact computation of time…
[London]: Printed for the Company of Stationers, 1612.
Page 162.

The “insuing Table” shows 1 Cornook = 4 bushels.