| boar | (noun) an uncastrated male hog | - |
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| (noun) Old World wild swine having a narrow body and prominent tusks from which most domestic swine come; introduced in United States | Synonyms: Sus scrofa, wild boar |
| hoar | (noun) ice crystals forming a white deposit (especially on objects outside) | Synonyms: frost, hoarfrost, rime |
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| oar | (noun) an implement used to propel or steer a boat | - |
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| roar | (noun) a very loud utterance (like the sound of an animal) | Synonyms: bellow, bellowing, holla, holler, hollering, hollo, holloa, roaring, yowl |
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| (noun) a deep prolonged loud noise | Synonyms: boom, roaring, thunder |
| (noun) the sound made by a lion | - |
| soar | (noun) the act of rising upward into the air | Synonyms: zoom |
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| trichobezoar | (noun) a compact mass of hair that forms in the alimentary canal (especially in the stomach of animals as a result of licking fur) | Synonyms: hair ball, hairball |
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| uproar | (noun) loud confused noise from many sources | Synonyms: brouhaha, hubbub, katzenjammer |
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| (noun) a state of commotion and noise and confusion | Synonyms: garboil, tumult, tumultuousness |