Noun
The act of constricting by means of some inherent power or by movement or change in the thing itself, as distinguished from compression.
The state of being constricted; the point where a thing is constricted; a narrowing or binding.
Source: Webster's dictionaryhe felt a constriction in her chest Source: Internet
she felt an alarming tightness in her chest Source: Internet
emotion caused a constriction of his throat Source: Internet
ACh gives the signal for muscles to contract, preventing them from relaxing. citation Initial symptoms following exposure to nerve agents (like sarin ) are a runny nose, tightness in the chest, and constriction of the pupils. Source: Internet
A constriction in the end of the barrel known as the choke is used to tailor the pattern for different purposes. Source: Internet
Also, when the crocodile's mouth is closed, the large fourth tooth in the lower jaw fits into a constriction in the upper jaw. Source: Internet