climbing onion(n = noun.plant) bowiea volubilis - much-branched leafless twining South African herb cultivated as an ornamental for its bright green stems growing from large aboveground bulbs;
is a kind of herb, herbaceous plant
is a member of bowiea, genus bowiea

bermuda onion, brown onion sauce, climbing, climbing bird's nest fern, climbing bittersweet, climbing boneset, climbing corydalis, climbing fern, climbing frame, climbing fumitory, climbing hemp-vine, climbing hempweed, climbing hydrangea, climbing iron, climbing lily, climbing maidenhair, climbing maidenhair fern, climbing nightshade, climbing perch, climbing salamander, egyptian onion, flowering onion, green onion, hooker's onion, mountain climbing, multiplier onion, nodding onion, nodding wild onion, onion, onion bagel, 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, rock climbing, sea onion, social climbing, spanish onion, spring onion, top onion, tree onion, vidalia onion, welsh onion, white onion sauce, wild climbing hempweed, wild onion