| ACROPHOBES | • acrophobes n. Plural of acrophobe. • ACROPHOBE n. someone with an abnormal fear of heights. |
| AEROPHOBES | • aerophobes n. Plural of aerophobe. • AEROPHOBE n. a person with a fear of flying. |
| BAROSCOPES | • baroscopes n. Plural of baroscope. • BAROSCOPE n. a weatherglass. |
| BLASTOPORE | • blastopore n. (Embryology) The opening into the archenteron. • BLASTOPORE n. the opening of the archenteron in the gastrula that develops into the anus of some animals, also BLASTOPOR. |
| BORESCOPES | • borescopes n. Plural of borescope. • BORESCOPE n. an optical device, e.g. a prism, used to inspect an inaccessible space e.g. an engine cylinder. |
| BROOMRAPES | • broomrapes n. Plural of broomrape. • broom-rapes n. Plural of broom-rape. • broom␣rapes n. Plural of broom rape. |
| CRYOPROBES | • cryoprobes n. Plural of cryoprobe. • CRYOPROBE n. a blunt chilled probe used to freeze tissue in cryosurgery. |
| GOBSTOPPER | • gobstopper n. A type of hard long-lasting candy, usually spherical in shape. • gob␣stopper n. (Britain) A large, hard, spherical sweet/candy that would completely fill the mouth. • GOBSTOPPER n. (colloquial) a large sweet that is sucked. |
| OBREPTIONS | • obreptions n. Plural of obreption. • OBREPTION n. (obsolete) an attempt to obtain ecclesiastical dispensation, etc. fraudulently. |
| POTBOILERS | • potboilers n. Plural of potboiler. • pot-boilers n. Plural of pot-boiler. • pot␣boilers n. Plural of pot boiler. |
| POURBOIRES | • pourboires n. Plural of pourboire. • POURBOIRE n. (French) a tip, gratuity. |
| POWERBOATS | • powerboats n. Plural of powerboat. • POWERBOAT n. a boat propelled by an inboard or outboard motor. |
| PROEMBRYOS | • proembryos n. Plural of proembryo. • PROEMBRYO n. a group of cells formed in the dividing zygote, from which part the embryo arises. |
| PROPOSABLE | • proposable adj. Capable of being proposed. • PROPOSABLE adj. that can be proposed. |
| PUREBLOODS | • purebloods n. Plural of pureblood. • PUREBLOOD n. a horse etc. of unmixed race. |