As a noun gnast is
a spark; a dying spark; a dead spark, as of a snuffed candle.
As a verb gnast is
(ambitransitive) to gnash.
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Not English
Wikidiffcom has no English definition. It may be misspelled. gnast
English
Etymology 1
From (etyl) gnast, knast, from (etyl) .
Noun
(
en noun)
A spark; a dying spark; a dead spark, as of a snuffed candle.
Etymology 2
From (etyl) gnasten, gnaisten, from (etyl) .
Verb
(
en verb)
(ambitransitive) To gnash.
Derived terms
* (l)