The Collaborative International Dictionary
Snithe
Snithe \Snithe\, Snithy \Snith"y\, a. [AS. sn[=i][eth]an to cut. See Snathe.] Sharp; piercing; cutting; -- applied to the wind. [Prov. Eng.]
Wiktionary
snithe
Etymology 1 vb. (context transitive now chiefly dialectal Northern England English) To cut. Etymology 2
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1 sharp; cutting. 2 (context of wind or weather English) cold. Etymology 3
v
(obsolete spelling of sny lang=en nodot=1) (gloss: abound, swarm, teem, be infested). (17th century)