kənzˈtriktə(r), kənˈstr- noun
( -s )
Etymology: New Latin, from Latin constrictus + -or — more at constrict
: one that constricts: as
a. : a muscle that contracts a cavity or orifice or compresses an organ
b. : a snake that kills its prey by rhythmically compressing it in coils of the body until the heartbeat and respiration are checked ; especially : a member of the Boidae (as the boa constrictor or the anaconda)