Definition from macmillandictionary.com
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He’s trying to balance on one leg.
She sat down and crossed her legs.
an exercise to strengthen the leg muscles
The horse kicked its hind legs.
Insects have six legs.
There was a dirty mark on his trouser leg.
roast leg of lamb
a stool with three legs
a table leg
the second leg of our journey across the US
the final leg of the band’s 30-month World Tour
the third leg of a round-the-world yacht race
Let's see if this analogy has legs. The big question for us is whether this project has legs.