'shut off' definitions:

Definition of 'shut off'

From: WordNet
verb
Stem the flow of; "shut off the gas when you leave for a vacation" [syn: shut off, close off]
verb
Isolate or separate; "She was shut off from the friends" [syn: shut off, close off]
verb
Block off the passage through; "We shut off the valve" [syn: shut off, block off, close off]