glance (n.) Look up glance at Dictionary.com
c.1500, "sudden movement producing a flash," from glance (v.). Meaning "brief or hurried look" is from 1590s.
glance (v.) Look up glance at Dictionary.com
mid-15c., of weapons, from glacen "to graze, strike a glancing blow" (c.1300), from Old French glacier "to slip, make slippery," from glace "ice" (see glacial). Sense of "look quickly" (first recorded 1580s) probably was influenced in form and meaning by Middle English glenten "look askance" (see glint). Related: Glanced; glancing.