01 v. t. To draw tighter; to straiten; to make more close in any manner.
imp. & p. p.
Tightened; p. pr. & vb. n.
Tightening
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1.
To draw tighter; to straiten; to make more close in any manner.“Just where I please, with tightened rein I'll urge thee round the dusty plain.” — Fawkes.
Phrases & compounds
Tightening pulley —
a pulley which rests, or is forced, against a driving belt to tighten it.