bear, [bair]
1.
any of the plantigrade, carnivorous or omnivorous mammals of the family Ursidae, having massive bodies, coarse heavy fur, relatively short limbs, and almost rudimentary tails.
3.
a gruff, burly, clumsy, bad-mannered, or rude person.
5.
Informal. a person who shows great ability, enthusiasm, stamina, etc.: a bear for physics.