[ wɪtθ , wɪdθ ]
■ noun
1》 the measurement or extent of something from side to side; the lesser of two or the least of three dimensions of a body.
↘a piece of something at its full extent from side to side.
2》 wide range or extent.
Origin
C17: from wide + -th 2 , on the pattern of breadth (replacing wideness ).