出典:Wiktionary
From one + off. Probably from foundry work, for which making reusable molds is expensive and expediency the rule for molds not to be used only once.
A term long used by artists who are printmakers and sculptors to indicate a unique print or casting. If using traditional edition numbering, a one-off would be a "1/1", which is said, "one of one" meaning the first print in an edition of one.
one-off (comparative more one-off, superlative most one-off)
1時に.
唯一つ
one fist
one pair
one breath
one sect
one arrow
one gourd
a side something
1次元の
one pair
片目の
1時に.
唯一つ
a syllable
one fist
one breath
the only one
ただ1つの