Tight·en v. t. [imp. & p. p. Tightened p. pr. & vb. n. Tightening.] 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.
Tightening pulley Mach., a pulley which rests, or is forced, against a driving belt to tighten it.
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tightened
adj 1: made tight or tighter; "the tightened ropes"; "a tightened
bolt"
2: made tighter or more stringent; "endured tightened economic
controls"