A three-legged stand or mount.
(science fiction) A fictional three-legged Martian war machine from H.G. Wells's novel The War of the Worlds (1897).
(slang) A man with macrophallism.
(intransitive) To enter the tripod position showing signs of exhaustion or distress.
(entomology, intransitive) Of a lizard, to raise its body upright bracing itself on hind legs and tail.