(third-person singular simple present blicks, present participle blicking, simple past and past participle blicked)
From Middle English blikken, blikien, bliken (“to shine gleam”, weak verb), from Old English blician, from Proto-Germanic *blikōną (“to shine, sparkle”), from Proto-Indo-European *bʰel- (“to shine”). Cognate with Dutch blikken (“to twinkle, turn pale”), German blicken (“to glance, look”), Swedish blicka (“to glance”), Icelandic blíka (“to shine, gleam”). Merged with Middle English blīken (strong verb), from Old English blīcan (“to shine, glitter, gleam”). More at blike.