Unable to walk properly because of a problem with one's feet or legs.
Moving with pain or difficulty on account of injury, defect or temporary obstruction of a function.
a lame leg, arm or muscle
(by extension) Hobbling; limping; inefficient; imperfect.
Unconvincing or unbelievable.
He had a really lame excuse for missing the birthday party.
Failing to be cool, funny, interesting or relevant.
He kept telling these extremely lame jokes all night.