Source : Webster's Revised Unabridged Dictionary (1913)

Cloture \Cl[^o]`ture"\, n. [F.] (Parliamentary Practice)
   See {Closure}, 5.

Source : WordNet®

cloture
     n : a rule for limiting or ending debate in a deliberative body
         [syn: {closure}, {gag rule}, {gag law}]
     v : terminate debate by calling for a vote; "debate was
         closured"; "cloture the discussion" [syn: {closure}]