| ARBITRIUM | • ARBITRIUM n. (Latin) a power of decision. |
| ARBORETUM | • arboretum n. A place where many varieties of tree are grown for research, educational, and ornamental purposes. • ARBORETUM n. (Latin) a collection of trees. |
| BARATHRUM | • barathrum n. A pit, especially one at Athens into which criminals were thrown. • barathrum n. The abyss, hell. • BARATHRUM n. (Latin) an insatiable extortioner or glutton; (historical) a pit in Athens into which condemned criminals were thrown. |
| BARNSTORM | • barnstorm v. To travel around the countryside making political speeches etc. • barnstorm v. (US) To appear at fairs and carnivals in exhibitions of stunt flying, sporting events, or theater. • barnstorm v. (US, of a sports team) To travel from town to town performing in front of small crowds. |
| BAROMETER | • barometer n. An instrument for measuring atmospheric pressure. • barometer n. (Figurative, by extension) Anything used as a gauge or indicator. • BAROMETER n. an instrument for measuring atmospheric pressure. |
| BAROMETRY | • barometry n. The art or process of making barometrical measurements. • BAROMETRY n. the art or process of making barometrical measurements. |
| BIRTHMARK | • birthmark n. A mark on the skin formed before birth. • BIRTHMARK n. a mark, e.g. a pigmented area or spot, on one's body at birth. |
| STORMBIRD | • stormbird n. Alternative form of storm-bird. • storm-bird n. The storm petrel. • storm-bird n. (Australia) The channel-billed cuckoo. |
| TAMBOURER | • tambourer n. One who embroiders on a tambour. • TAMBOURER n. one who embroiders on a tambour. |
| TIMBERIER | • TIMBERY adj. like timber. |
| TREMBLERS | • tremblers n. Plural of trembler. • TREMBLER n. a West Indian bird of the family Mimidae. |
| TREMBLIER | • tremblier adj. Comparative form of trembly: more trembly. • TREMBLY adj. tremulous. |
| TREMBLORS | • tremblors n. Plural of tremblor. • TREMBLOR n. an earth tremor, also TEMBLOR. |