[bool-mas-tif, -mah-stif]
one of an English breed of dogs having a short, fawn or brindled coat, produced by crossing the bulldog and the mastiff.
Also, bull-mastiff, bull mastiff.

1870–75; bull(dog) + mastiff

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Between times there are long, snowy walks with a bullmastiff who does not particularly care for long, snowy walks.
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