Definition from Wiktionary, the free dictionary
- The four legs of a quadruped.
- The four limbs of a primate.
- A card game similar to whist.
1874, Thomas Hardy, Far from the Madding Crowd:
- 'Twas a bad leg allowed me to read the Pilgrim's Progress, and Mark Clark learnt All-Fours in a whitlow.
four limbs of a primate