1 |
fill-in"substitute," 1918 (as an adjective, 1916), from verbal phrase; see fill (v.), in (adv.). Earlier as a noun was fill-up (1811).
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2 |
fill-inVerb. To severely beat up (someone).
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3 |
fill-in(n) someone who takes the place of another (as when things get dangerous or difficult)
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4 |
fill-inArises in the context of sparse matrices
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5 |
fill-in
A temporary replacement for another
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