curb
This word carries a strong sense of artificial limitation. It suggests a boundary that is intentionally placed to prevent something from spilling over or escaping control. When used as a verb, it often describes a conscious effort to suppress a natural urge or a systemic attempt to slow down a growing problem. In its physical noun form, it represents the hard transition between a safe pedestrian zone and a dangerous roadway. This physical boundary mirrors the metaphorical meaning of the verb, acting as a literal stop-gap that keeps traffic from encroaching on the sidewalk.
Countable when referring to the physical concrete edges of a street. Uncountable when referring to the act of restraint or the general concept of limiting something.
Meanings
To limit or control something, especially an unpleasant or unwanted emotion or habit.
"The government is taking steps to curb inflation."
A stone edge or concrete border between a pavement and a road.
"The driver pulled the car up to the curb and stopped."