curb

noun

the act of restraining power or action or limiting excess
an edge between a sidewalk and a roadway consisting of a line of curbstones (usually forming part of a gutter)
a horse's bit with an attached chain or strap to check the horse

verb

to place restrictions on
to put down by force or authority
“We need to curb this behavoir before it spreads.”
to keep to the curb
“curb your dogs”
to lessen the intensity of