Pink of Perfection (The).
The acmē; the beau-ideal. Shakespeare has “the pink of courtsey” (Romeo and Juliet, ii. 4); the pink of politeness. (Welsh, pwnc, a point, an acmē; our pink, to stab; pinking, cutting into points.)
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Entry taken from Dictionary of Phrase and Fable, edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.