D defs.my
Entry 1 sense Webster, 1913

Tightener

· Tight·en·er · IPA /ˈtaɪtn̩ɚ/
01 n. That which tightens; specifically (Mach.), a tightening pulley.
  1. 1.
    That which tightens; specifically (Mach.), a tightening pulley.(Mach.)