Meaning of “belt” - Learner’s Dictionary

belt

noun [ C ] uk us /belt/
WAIST

A2 a long, thin piece of leather, cloth, or plastic that you wear around your waist

AREA

an area of a particular type of land, or an area where a particular group of people live:

the commuter belt
a narrow belt of trees
MACHINE

part of a machine that moves in a circle to carry objects or to make a machine work:

The car needs a new fan belt.
→ See also conveyor belt , green belt , safety belt , seat belt , have sth under your belt , tighten your belt

(Definition of “belt noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)