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

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adj. Spotted or patched, especially in black and white: a piebald horse.

n. A piebald animal, especially a horse.

adj. Spotted or blotched, especially in black and white.

adj. Of mixed character, heterogeneous.

n. An animal with piebald coloration.

adj. Having spots and patches of black and white, or other colors; mottled; pied.

adj. Fig.: Mixed.

Having spots or patches of white and black or other color; party-colored; pied: as, a piebald horse.

Hence Mixed; heterogeneous; mongrel.

adj. having sections or patches colored differently and usually brightly

"This little guy is what's known as a piebald squirrel - the term piebald applies to any animal displaying depigmented white fur."

coloured    colorful    colored   

mottled    pied    party-colored   

palomino    dapple-grey    spavined    coal-black    high-headed    roan    riderless    high-stepping    dappled    dapple