| BELLYBUTTONS | • bellybuttons n. Plural of bellybutton. • belly-buttons n. Plural of belly-button. • belly␣buttons n. Plural of belly button. |
| BIBULOUSNESS | • bibulousness n. The quality of being bibulous. • BIBULOUSNESS n. the state of being bibulous. |
| BLOCKBUSTERS | • blockbusters n. Plural of blockbuster. • BLOCKBUSTER n. a bomb large enough to destroy a city block. |
| BOATBUILDERS | • boatbuilders n. Plural of boatbuilder. • BOATBUILDER n. one that builds boats. |
| BODYBUILDERS | • bodybuilders n. Plural of bodybuilder. • BODYBUILDER n. one who engages in bodybuilding. |
| BOMBACACEOUS | • bombacaceous adj. (Botany) Belonging to the now disused family Bombacaceae (now the much-reduced subfamily Bombacoideae in Malvaceae). • BOMBACACEOUS adj. relating to the family Bombacaceae, silk-cotton trees. |
| BRONCOBUSTER | • broncobuster n. (Chiefly US) A person who breaks horses so that they can be ridden with a saddle. • bronco-buster n. Alternative spelling of broncobuster. • bronco␣buster n. Alternative spelling of broncobuster. |
| BUMBERSHOOTS | • bumbershoots n. Plural of bumbershoot. • BUMBERSHOOT n. (US slang) umbrella. |
| BUTTONBUSHES | • buttonbushes n. Plural of buttonbush. • BUTTONBUSH n. a North American shrub of the madder family with globular flower heads. |
| COMBUSTIBLES | • combustibles n. Plural of combustible. • COMBUSTIBLE n. something able to be burned. |
| HOBBLEBUSHES | • hobblebushes n. Plural of hobblebush. • hobble-bushes n. Plural of hobble-bush. • HOBBLEBUSH n. a low American bush having long, straggling branches and handsome flowers. |
| MICROBUBBLES | • microbubbles n. Plural of microbubble. • MICROBUBBLES n. a contrast medium used with ultrasound, consisting of tiny bubbles of gas introduced into the vascular system. |
| STUBBORNNESS | • stubbornness n. The state of being stubborn. • STUBBORNNESS n. the state of being stubborn. |
| SUBNOTEBOOKS | • subnotebooks n. Plural of subnotebook. |
| SUPERBOMBERS | • superbombers n. Plural of superbomber. • SUPERBOMBER n. a very large bomber. |
| UNOBSERVABLE | • unobservable adj. That cannot be observed. • unobservable n. Something that cannot be observed. • UNOBSERVABLE n. something that cannot be observed. |