| HEARTTHROBS | • heartthrobs n. Plural of heartthrob. • HEARTTHROB n. an object of affection. |
| BROTHERHOODS | • brotherhoods n. Plural of brotherhood. • BROTHERHOOD n. the state of being brothers. |
| RHABDOSPHERE | • rhabdosphere n. A minute sphere composed of rhabdoliths. • RHABDOSPHERE n. an aggregation of rhabdoliths in oceanic ooze. |
| BREAKTHROUGHS | • breakthroughs n. Plural of breakthrough. • BREAKTHROUGH n. an offensive thrust that penetrates and carries beyond a defensive line in warfare. |
| RHABDOSPHERES | • rhabdospheres n. Plural of rhabdosphere. • RHABDOSPHERE n. an aggregation of rhabdoliths in oceanic ooze. |
| RHOMBOHEDRONS | • rhombohedrons n. Plural of rhombohedron. • RHOMBOHEDRON n. a parallelepiped whose faces are rhombuses. |
| THOROUGHBREDS | • thoroughbreds n. Plural of thoroughbred. • Thoroughbreds n. Plural of Thoroughbred. • THOROUGHBRED n. a horse so bred. |
| ERYTHROPHOBIAS | • ERYTHROPHOBIA n. an aversion to the color red; an extreme fear of blushing. |
| MOUTHBREATHERS | • mouthbreathers n. Plural of mouthbreather. • mouth-breathers n. Plural of mouth-breather an alternative spelling of mouth breather. • mouth␣breathers n. Plural of mouth breather. |
| THOROUGHBRACES | • thoroughbraces n. Plural of thoroughbrace. • THOROUGHBRACE n. any of several leather straps supporting the body of a carriage and serving as springs. |
| BRACHISTOCHRONE | • brachistochrone n. (Mathematics) A cycloid; the curve of fastest descent between two points. • BRACHISTOCHRONE n. the curve along which a particle acted on by a force (e.g. gravity) will pass in the shortest time from one given point to another. |
| BRONCHOGRAPHIES | • BRONCHOGRAPHY n. radiological examination of the trachea or bronchi. |
| RHOMBENPORPHYRS | • RHOMBENPORPHYR n. an intermediate, moderately fine-grained igneous rock with feldspar phenocrysts rhombic in section, also RHOMBENPORPHYRY, RHOMBPORPHYRY. |
| RHOMBPORPHYRIES | • RHOMBPORPHYRY n. an intermediate, moderately fine-grained igneous rock with feldspar inclusions, also RHOMBENPORPHYR, RHOMBENPORPHYRY. |