| BAL | a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone |
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| BAL | (baseball or basketball or football) used of a player skilled in stealing the ball or robbing a batter of a hit |
| BAL | a hammer with one round and one flat end |
| BAL | having the shape of a sphere or ball |
| BAL | a narrative poem of popular origin |
| BAL | a narrative song with a recurrent refrain |
| BAL | a composer of words or music for popular songs |
| BAL | a poem consisting of 3 stanzas and an envoy |
| BAL | a singer of popular ballads |
| BAL | any heavy material used to stabilize a ship or airship |
| BAL | make steady with a ballast |
| BAL | a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations) |