ten·ter /ˈtɛntɚ/
  張布鉤,張布架
  Ten·ter n.
  1. One who takes care of, or tends, machines in a factory; a kind of assistant foreman.
  2. Mach. A kind of governor.
  Ten·ter, n.  A machine or frame for stretching cloth by means of hooks, called tenter-hooks, so that it may dry even and square.
  Tenter ground, a place where tenters are erected.
  Tenter-hook, a sharp, hooked nail used for fastening cloth on a tenter.
  To be on the tenters, To be on the tenter-hooks or To be on tenterhooks, to be on the stretch; to be in distress, uneasiness, or suspense. --Hudibras.
  Ten·ter, v. i. [imp. & p. p. Tentered p. pr. & vb. n. Tentering.] To admit extension.
     Woolen cloth will tenter, linen scarcely.   --Bacon.
  Ten·ter, v. t. To hang or stretch on, or as on, tenters.
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  tenter
       n : a framework with hooks used for stretching and drying cloth