Webster’s Revised Unabridged Dictionary · 1913
Squinance
Squin′ance, Squin′an·cy, n. [F. esquinancie, OF. squinance, esquinance. See Quinsy.] 1. (Med.) The quinsy. See Quinsy. [Obs.]
2. (Bot.) A European perennial herb (Asperula cynanchica) with narrowly linear whorled leaves; — formerly thought to cure the quinsy. Also called quincewort.
Squinancy berries, black currants; — so called because used to cure the quinsy. Dr. Prior.