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. [ 1913 Webster ]

That tickling rheums
Should ever tease the lungs and blear the sight. Cowper. [ 1913 Webster ]

To blear the eye of, to deceive; to impose upon. [ Obs. ] Chaucer. [ 1913 Webster ]

a. [ See Blear, v. ] 1. Dim or sore with water or rheum; -- said of the eyes. [ 1913 Webster ]

His blear eyes ran in gutters to his chin. Dryden. [ 1913 Webster ]

2. Causing or caused by dimness of sight; dim. [ 1913 Webster ]

Power to cheat the eye with blear illusion. Milton. [ 1913 Webster ]

a. Dimmed, as by a watery humor; affected with rheum. -- Blear"ed*ness n. [1913 Webster]

Dardanian wives,
With bleared visages, come forth to view
The issue of the exploit. Shak. [1913 Webster]

n. (Med.) A disease of the eyelids, consisting in chronic inflammation of the margins, with a gummy secretion of sebaceous matter. Dunglison. [ 1913 Webster ]

a. 1. Having sore eyes; having the eyes dim with rheum; dim-sighted. [ 1913 Webster ]

The blear-eyed Crispin. Drant. [ 1913 Webster ]

2. Lacking in perception or penetration; short-sighted; as, a blear-eyed bigot. [ 1913 Webster ]

n. The state of being blear-eyed. [ 1913 Webster ]

a. Somewhat blear. [ 1913 Webster ]

adj. having eyes sore or unfocused, due to weariness or excessive drinking; same as blear-eyed{ 1 }.
Syn. -- blear, bleary. [ WordNet 1.5 ]

2. same as teary. [ R. ] [ PJC ]