Constrict means to make something smaller or narrower.
To block supply. like when a snake constricts something it cuts off its air supply so it suffocates
constricting
A constricting snake is a boa (boa constrictor).
The deadly snake was constricting the boy.
An octopus can get a firm grip on prey by constricting its long tentacles.
boa constrictor
A Python
Hanukkah is a Hebrew word, and that is how we call it. The "H" in "Hanukkah" is a slightly rasping sound, formed by partially constricting the soft palate.See also:More about Hanukkah
By opening up or constricting.
You probably mean the pupillary reflex. It is the reflex responsible for your pupils constricting (becoming smaller) when exposed to light and dilating (becoming bigger) when you walk into a dark room.
Diaphragm
Ligature -- 19 down on the SMH crossword?
bigger mammals and large constricting and venomous snakes