This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. One who roars.

n. One of a group of young men who would carouse in taverns, then pick brawls on the street for entertainment.

n. One who, or that which, roars.

n. A riotous fellow; a roaring boy.

n. A horse subject to roaring. See Roaring, 2.

n. The barn owl.

n. One who or that which roars.

n. Specifically— A noisy, riotous person; a roaring boy or girl. See roaring, p. a. [Old London slang.]

n. One who shouts or bawls.

n. A broken-winded horse. See roaring, n., 2.

n. Same as bull-roarer.

n. A gas-well from which, a large quantity of gas flows noisily.

n. someone who communicates vocally in a very loud voice

"a thing we called a roarer; I don't know whether they have such things now."

communicator   

ring-tailed roarer   

roaring   

crier   

squealer    lemur    mongoose    'gator    s'redit    doody    impregnate