To look or glance quickly (verb), or a quick glance or look (noun) - dialectal or archaic.
Possibly from glint or a Scandinavian source; the root likely connects to words meaning 'to gleam' or 'flash.' The exact etymology is uncertain, making this a true linguistic mystery word.
This obscure word survived mainly in Scottish and Northern English dialects, where it describes that quick sideways look—the fact that it almost vanished from English shows how dialect words constantly die unless they stay useful in everyday conversation.
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