E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Pink of Perfection (The).
The acm; the beau-ideal. Shakespeare has the pink of courtsey (Romeo and Juliet, ii. 4); the pink of politeness. (Welsh, pwnc, a point, an acm; our pink, to stab; pinking, cutting into points.)