Useful english dictionary. 2012.
Squinsy — Squin sy (skw[i^]n z[y^]), n. (Med.) See {Quinsy}. [Obs.] [1913 Webster] … The Collaborative International Dictionary of English
Squinsy — A severe inflammation of the throat; tonsillitis. [< Lat. quinancia] Cf. Ague … Dictionary of Medieval Terms and Phrases