Coin

COIN, sb.1 and v. Nhb. Dur. Wm. Not. Glo. Dev. Cor. Written coign Nhb.1 Wm. Also in form quine Glo.1 [koin, kwain.]

1. sb. A corner; a street-corner. Nhb.1 The coins foot gathering of men and boys. The coins or coignees point to its position as a place where nearly all thoroughfares converge, Forster Hist. Corbridge (1881) 57. Wm. And that the chimley coigns sud be natural headed, Rawnsley Remin. Wordsworth (1884) VI. 170. Glo.1, Dev.1 Cor. Go right athurt the coin of the field, Tregellas Tales (ed. 1865) 185; Cor.1 Cor.2 Hence Coin-stone, sb. a corner-stone. Cor.1
2. A stone in a wall which passes through. Dur.1
3. A block of tin which has been stamped. Cor. N. & Q. (1853) 1st S. viii. 443.
4. v. To strike off the corner of a block of tin, to discover its quality before it is stamped. Dev. The stamping of this impression by a hammer is coining the tin, Bray Desc. Tamar and Tavy (1836) I. 118. Cor. N. & Q. (1853) 1st S. viii. 443; Cor.1; Cor.2 The large blocks of tin being brought to a coinage town, the officers appointed by the Duke of Cornwall assayed it by taking off a piece of one of the under corners of the block of about a pound weight, partly by cutting, and partly by breaking; and if well purified, stamped the face of the block with the impression of the seal of the Duchy. This was ‘coining’ the tin, after which it became ‘merchandable,’ and not before. [The tin, after it is melted, is coyned by the King's officer, with the lion rampant, Ray (1691).]
5. To clog or scotch a wheel. Not.2 [5. Fr. coigner, to wedge, to fasten with a wedge (COTGR.).]

COIN, sb.2 s.Dev. [koin, kwoin.] A female crab. s.Dev. Fox Kingsbridge (1874); (R.P.C.) [Cp. Fr. coin, the spawn, row or egs of fish.... Coin de mer, a kind of mullet fish (COTGR.).]

Source : Wright, Joseph English Dialect Dictionary web : https://eddonline4-proj.uibk.ac.at/edd/main.html