Borrowed from Egyptian bꜣ,
ba (plural bas)
- (Egyptian mythology) A being's soul or personality, represented as a bird-headed figure, which survives after death but must be sustained with offerings of food.
The sound is very commonly made by infants, and is interpreted by parents as a reference to themselves.
ba (plural bas) (not generally used in the plural)
- (colloquial, and in direct address) Father, baba.
- (historical) A medieval football game played in parts of Scotland around Christmas and New Year.