onion bagel(n = noun.food) - bagel flavored with onion;
is a kind of bagel, beigel

bagel, bermuda onion, brown onion sauce, climbing onion, egyptian onion, flowering onion, green onion, hooker's onion, multiplier onion, nodding onion, nodding wild onion, onion, onion bread, onion butter, onion dome, onion louse, onion mildew, onion plant, onion roll, onion salt, onion smut, onion stem, onion thrips, onion yellow dwarf, onion yellow-dwarf virus, purple onion, red onion, red-skinned onion, sea onion, spanish onion, spring onion, top onion, tree onion, vidalia onion, welsh onion, white onion sauce, wild onion