| BIRDWATCHERS | • birdwatchers n. Plural of birdwatcher. • bird␣watchers n. Plural of bird watcher. • BIRDWATCHER n. one who watches birds as a hobby. |
| BREATHALYSER | • breathalyser n. Alternative spelling of breathalyzer. • BREATHALYSER n. (tradename) a device which measures the amount of alcohol on a person's breath, also BREATHALYZER. |
| BREATHARIANS | • breatharians n. Plural of breatharian. • BREATHARIAN n. a person who believes that it is possible, through meditation, to reach a level of consciousness where one can exist on air alone. |
| ERYTHORBATES | • erythorbates n. Plural of erythorbate. • ERYTHORBATE n. a salt of erythorbic acid that is used in foods as an antioxidant. |
| ERYTHROBLAST | • erythroblast n. (Cytology) A cell in the bone marrow from which red blood cells develop. • ERYTHROBLAST n. a cell in bone marrow that develops into an erythrocyte. |
| HAIRBREADTHS | • hairbreadths n. Plural of hairbreadth. • HAIRBREADTH n. the breadth of a hair; a minute distance, also HAIRSBREADTH. |
| HAIRSBREADTH | • hairsbreadth n. A very short distance or a very small amount (as is the width of a hair). • hair's␣breadth n. A very small amount or distance. • HAIRSBREADTH n. the breadth of a hair; a minute distance, also HAIRBREADTH. |
| HALTERBREAKS | • halterbreaks v. Third-person singular simple present indicative form of halterbreak. • HALTERBREAK v. to break (as a colt) to a halter. |
| HARBORMASTER | • harbormaster n. (US, nautical) An official responsible for the enforcement of regulations in a port. • harbor␣master n. Alternative spelling of harbormaster. • HARBORMASTER n. one in charge of a harbour. |
| HEATHBERRIES | • HEATHBERRY n. any of various plants that have berrylike fruits and grow on heaths, such as the bilberry and crowberry. |
| MOTHERBOARDS | • motherboards n. Plural of motherboard. • MOTHERBOARD n. the board containing the main circuits of an electronic device, especially in computers. |
| ORTHOBORATES | • orthoborates n. Plural of orthoborate. • ORTHOBORATE n. a salt of orthoboric acid. |
| OVERBREATHES | • overbreathes v. Third-person singular simple present indicative form of overbreathe. |
| STRAIGHTBRED | • straightbred adj. Produced by breeding from a single breed, variety or species. • straightbred n. Any organism produced by breeding from a single breed, variety, or species. • STRAIGHTBRED n. an animal produced by breeding a single breed, strain, or type. |
| SUBCHARTERED | • SUBCHARTER v. to rent a chartered vehicle. |
| THREADBAREST | • threadbarest adj. Superlative form of threadbare: most threadbare. • THREADBARE adj. having the nap worn off so that the thread shows. |
| TORCHBEARERS | • torchbearers n. Plural of torchbearer. • TORCHBEARER n. one that carries a torch. |
| TURNBROACHES | • turnbroaches n. Plural of turnbroach. • TURNBROACH n. a turnspit. |
| UNDERBREATHS | • underbreaths n. Plural of underbreath. • UNDERBREATH n. subdued voice; rumour. |