Designating a pair of compasses or callipers having one of the two legs bowed or bent; usually as "odd-leg callipers". Also used as noun, in plural: = "jenny".
Origin
Early 20th century; earliest use found in The New English Dictionary. From odd + leg.
Definition of odd-leg in US English:
odd-leg
adjectiveˈɒdlɛɡ
Designating a pair of compasses or callipers having one of the two legs bowed or bent; usually as "odd-leg callipers". Also used as noun, in plural: = "jenny".
Origin
Early 20th century; earliest use found in The New English Dictionary. From odd + leg.