| BIOTERRORS | • BIOTERROR n. use of biological weapons by terrorists. |
| BIROSTRATE | • birostrate adj. (Rare) Having two beaks (or beak-like structures). • BIROSTRATE adj. double-beaked. |
| BIRTHROOTS | • birthroots n. Plural of birthroot. • BIRTHROOT n. a herbaceous plant with an astringent rootstock, said to have medicinal properties, also BIRTHWORT. |
| BIRTHWORTS | • birthworts n. Plural of birthwort. • BIRTHWORT n. a plant formerly reputed to help parturition, also BIRTHROOT. |
| BRAINSTORM | • brainstorm v. To investigate something, or solve a problem using brainstorming. • brainstorm v. To participate in a brainstorming session. • brainstorm n. (US) A sudden thought, particularly one that solves a long-standing problem. |
| BRIARROOTS | • briar-roots n. Plural of briar-root. • BRIARROOT n. the root of a briar, also BRIERROOT. |
| BRIERROOTS | • BRIERROOT n. the root of a briar, also BRIARROOT. |
| BROWNSHIRT | • brownshirt n. Alternative letter-case form of Brownshirt. • Brownshirt n. (Historical) A uniformed member of the German Nazi Party (NSDAP), especially a storm trooper of the Sturmabteilung. • Brownshirt n. Any member of a fascist party; any fascist or neo-Nazi. |
| CROSSBIRTH | • crossbirth n. Alternative form of cross-birth. • cross-birth n. (Medicine) A birth in which the fetus is positioned with neither the head nor the feet lying in the… • CROSSBIRTH n. a birth in which the child lies transversely in the uterus. |
| ESTRIBUTOR | • ESTRIBUTOR n. a person or organization that helps an author publish and distribute his or her own work in electronic form. |
| FIRSTBORNS | • firstborns n. Plural of firstborn. • FIRSTBORN n. the first in order of birth, the eldest child. |
| FRITHBORHS | • frithborhs n. Plural of frithborh. • FRITHBORH n. (Old English) a surety for keeping the peace, aka frankpledge. |
| HERBORISTS | • herborists n. Plural of herborist. • HERBORIST n. a herbalist. |
| LIBERATORS | • liberators n. Plural of liberator. • LIBERATOR n. one who liberates. |
| MICROBURST | • microburst n. (Meteorology) A strong downdraft, of less than 2.5 miles in diameter, that can cause damaging winds… • MICROBURST n. a sudden violent downward rush of air usually associated with thunderstorms, also DOWNBURST. |
| RIVERBOATS | • riverboats n. Plural of riverboat. • RIVERBOAT n. a boat used for river transport. |
| SOMBRERITE | • sombrerite n. (Mineralogy) A hard impure calcium phosphate. • SOMBRERITE n. rock-guano. |
| STORMBIRDS | • stormbirds n. Plural of stormbird. • storm-birds n. Plural of storm-bird. • STORMBIRD n. a petrel. |
| THORNBIRDS | • thornbirds n. Plural of thornbird. • THORNBIRD n. any of several tropical birds of the genus Phacellodomus that construct large globe-shaped nests. |