[Goes with COCKLE v.1 (which has not yet been found as early).] An uneven place, pucker or bulge on what ought to be a flat surface, as a piece of cloth, a sheet of glass, etc.
1522. [see COCKLY1].
1530. Palsgr., 206/2. Cokell of the clothe, nev de drap.
a. 1853. Lindley, in Gardener’s Chron. What the manufacturers call ‘cockles,’ producing that uneven puckering appearance which is the peculiar characteristic of sheet glass. Of these cockles some are circular.
1885. Yorkshire Newspr. (Local terms of woollen manuf.), Cockles, imperfections in cloth.
