We don't have synonyms for clotures yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are clothes, closure and cloture.
(n) :
(law, politics, chiefly US) In legislative assemblies that permit unlimited debate (that is, a filibuster): a motion, procedure or rule by which debate is ended so that a vote may be taken on the matter. For example, in the United States Senate, a three-fifths majority vote of the body is required to invoke cloture and terminate debate.
(n) :
(law, politics, chiefly US) In legislative assemblies that permit unlimited debate (that is, a filibuster): a motion, procedure or rule by which debate is ended so that a vote may be taken on the matter. For example, in the United States Senate, a three-fifths majority vote of the body is required to invoke cloture and terminate debate.