Definition of rear verb from the Oxford Advanced American Dictionary

     

    rear

     verb
    verb
    NAmE//rɪr//
     
    Verb Forms present simple I / you / we / they rear
     
    he / she / it rears
     
    past simple reared
     
    -ing form rearing
     
     
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  1. 1[transitive] rear somebody/something [often passive] to care for young children or animals until they are fully grown synonym raise She reared a family of five on her own. Lions usually manage to rear about half the number of cubs born to them.
  2. 2[transitive] rear something to breed or keep animals or birds, for example on a farm to rear cattle
  3. 3[intransitive] rear (up) (of an animal, especially a horse) to raise itself on its back legs, with the front legs in the air The horse reared, throwing its rider.
  4. 4[intransitive] rear (up) (of something large) to seem to lean over you, especially in a threatening way The great bulk of the building reared up against the night sky.
  5. Idioms
    something rears its (ugly) head
     
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    if something unpleasant rears its head or rears its ugly head, it appears or happens
    Phrasal Verbsrear somebody/something on something
See the Oxford Advanced Learner's Dictionary entry: rear