Coarctation

n.	1.	Confinement to a narrow space.
	2.	Pressure; that which presses.
	3.	(Med.) A stricture or narrowing, as of a canal, cavity, or orifice.

Noun	1.	coarctation - tight or narrow compression Synonyms: constriction
	2.	coarctation - (biology) a narrowing or constriction of a vessel or canal; especially a congenital narrowing of the aorta

compression, condensation, constriction, contraction