the act of constricting.

the state of being constricted; tightness or inward pressure.

a constricted part.

something that constricts.

Phonetics . an articulated narrowing of the vocal tract that in consonants audibly obstructs the flow of air and in vowels defines an interconnection between or among resonance cavities. Compare closure ( def. 6 ) .

noun

opening

noun

binding , choking , compression , constraint , contraction , cramp , impediment , limitation , narrowing , pressure , reduction , restriction , squeezing , stenosis , stricture , tightness , squeeze , coarctation , coercion , hindrance , inhibition , knot , obstruction , oppression , strain , strangulation , tightening