/blɪŋk/·verb·c. 1300 CE in Middle English, in the sense 'to gleam or shine'; attested in Northern and Scottish Middle English texts. The eye-closure sense is clearly present by the 14th century. The modern spelling 'blink' is established by the early 16th century.·Established
Origin
Blink descends from Proto-Germanic *blinkijaną (to gleam, flash), belonging to a dense Germanic bl- phonaesthetic cluster — blind, blank, bleach, blaze, blond — that binds the sound to the concept of light and vision, with the eye's blink being a momentary enactment of blindness.
Definition
To shut and open the eyes rapidly; originally from Proto-Germanic *blinkijaną meaning to gleam or flash, reflecting the momentary flash of light as the eyelid opens.
The Full Story
Old English / Middle EnglishProto-Germanic to Middle English, 9th–14th century CEwell-attested
The word 'blink' traces its lineage deep into the Germanic branch of the Indo-European family, ultimately descending from the Proto-Indo-European root *bhel- (to shine, flash, burn, gleam). Under Grimm's Law, the PIE *bh- shifts to Proto-Germanic *b-, giving us the reconstructed Proto-Germanic form *blinkijaną, meaning 'to gleam, flash, or shine intermittently'. This form belongs to the characteristic Germanic 'bl-' cluster of light words — blaze (*blēzaz, a torch), blank (ultimately Germanic *blankaz, shining white), blind (*blindaz, originally 'confused by light, dazzled' before narrowing to total sightlessness), bleach (*blaikijaną, to make
Did you know?
The Germanic bl- onset is one of the most concentrated phonaesthetic patterns in any language family: blind, blank, bleach, blaze, blond, bliss, and blink all cluster around light and vision. The eye's blink was understood as a momentary blindness — the same root, the same darkness, but reversible. Proto-Germanic speakers, without intending to theorise, built an entire philosophy of vision into two letters.
glance of light', appearing in texts from around the 13th century. Old Norse blikna (to grow pale, to gleam) and Danish blinke (to glitter, to wink) are
, suggesting the word circulated across the North Sea Germanic dialects. The semantic shift from 'to flash or gleam' to 'to shut the eyes momentarily' is explained by the flash of the eyelid itself — a blink is the momentary extinction and return of light as the lid passes over the eye. By the 16th century, the modern meaning — a single rapid closure of the eyelid — was firmly established in English. Key roots: *bhel- (Proto-Indo-European: "to shine, flash, burn, gleam; root of a broad family of brightness and fire words"), *blinkijaną (Proto-Germanic: "to gleam, flash, shine intermittently; immediate ancestor of the English verb").