The Collaborative International Dictionary
Blear \Blear\, v. t. [imp. & p. p. Bleared; p. pr. & vb. n. Blearing.] [OE. bleren; cf. Dan. plire to blink, Sw. plira to twinkle, wink, LG. plieren; perh. from the same root as E. blink. See Blink, and cf. Blur.] To make somewhat sore or watery, as the eyes; to dim, or blur, as the sight. Figuratively: To obscure (mental or moral perception); to blind; to hoodwink.
That tickling rheums
Should ever tease the lungs and blear the sight.
--Cowper.
To blear the eye of, to deceive; to impose upon. [Obs.]
--Chaucer.
Wiktionary
vb. (present participle of blear English)
Usage examples of "blearing".
They stood shivering in damp and soiled clothing, their blearing eyes fixed hopelessly on the lowering signs in the west.
On his back on the bright floor of the truck, blearing up at the greasy tarpaulin that was the roof.