wink, blink, twinkle
瞬 centers on an extremely brief moment or flicker: a wink, a blink, or a twinkle. All meanings share the idea of something happening in an instant.
瞬 combines 目 (eye) with 舜, which likely contributes the sound and the idea of a quick, fleeting movement. The character expresses the rapid action of an eye blinking or winking.
The eye radical 目 on the left and the complex right side 舜 suggest a quick, flickering motion. Picture an eye blinking rapidly, like a twinkling star.
For シュン, imagine a shooting star that winks and is gone in a shun (シュン) instant. The quick shun sound matches the blink of an eye.
moment; instant; second
instant; moment; for an instant
instant; moment; (split) second; (in a) flash; (in the) blink of an eye
to twinkle (e.g. stars); to flicker; to waver
blink (of eyes); wink
instantaneous
in an instant; instantly; in a moment; instantaneously; in the twinkling of an eye
breaking off short (in one's speech); rendered speechless for a moment
moment; instant
nationwide instantaneous alert system; J-Alert system; satellite-based early warning system used in Japan
a few moments
maximum instantaneous wind speed
significant instant
decisive moment; critical moment; crucial moment
to blink (one's eyes) repeatedly
to blink (one's eyes); to wink; to bat
brief moment; blink of an eye (time span)
in the twinkling of an eye; in a flash
to wink; to blink; to twinkle; to flicker
instant drying