| BLASTOPORES | • blastopores n. Plural of blastopore. • BLASTOPORE n. the opening of the archenteron in the gastrula that develops into the anus of some animals, also BLASTOPOR. |
| BLASTOSPORE | • blastospore n. (Mycology) A type of fungal spore produced asexually by budding. • BLASTOSPORE n. the orifice of a gastrula. |
| BOOSTERISMS | • boosterisms n. Plural of boosterism. • BOOSTERISM n. the practice of boosting or promoting a product or idea. |
| BROWNSTONES | • brownstones n. Plural of brownstone. • BROWNSTONE n. a dark variety of sandstone, much used for building purposes. |
| DOORBUSTERS | • doorbusters n. Plural of doorbuster. |
| GOBSTOPPERS | • gobstoppers n. Plural of gobstopper. • gob␣stoppers n. Plural of gob stopper. • GOBSTOPPER n. (colloquial) a large sweet that is sucked. |
| MOTORBUSSES | • motorbusses n. Plural of motorbus. • MOTORBUS n. a bus driven by an internal-combustion engine. |
| OBSERVATORS | • observators n. Plural of observator. • OBSERVATOR n. one who observes or takes notice. |
| ROUSEABOUTS | • rouseabouts n. Plural of rouseabout. • ROUSEABOUT n. (Australian) an odd-job man on a sheep station, also ROUSTABOUT. |
| SHOWBOATERS | • showboaters n. Plural of showboater. • SHOWBOATER n. one who behaves in an ostentatious manner to show off. |
| SMOOTHBORES | • smoothbores n. Plural of smoothbore. • SMOOTHBORE n. a gun with a smooth bore. |
| STONEBORERS | • STONEBORER n. any boring mollusc. |
| STROBOSCOPE | • stroboscope n. Instrument for studying or observing periodic movement by rendering a moving body visible only at regular intervals. • stroboscope n. A lamp that produces short bursts of light that synchronizes with a camera shutter for photographing… • stroboscope n. A photograph produced by such a machine. |
| STRONGBOXES | • strongboxes n. Plural of strongbox. • STRONGBOX n. a box for holding valuables. |