| BACKSTROKERS | • backstrokers n. Plural of backstroker. |
| BREAKTHROUGH | • breakthrough adj. Characterized by major progress or overcoming some obstacle. • breakthrough adj. (Immunology) Involving the contraction of a disease by a person with a decreased susceptibility, such… • breakthrough adj. (Medicine) The emergence or one or more symptoms of a condition despite medication or other medical treatment. |
| BREASTSTROKE | • breaststroke n. A swimming stroke in which the swimmer lies face down, the arms being swept forward, outward and back… • breaststroke v. To swim using this stroke. • BREASTSTROKE n. a swimming-stroke performed breast-down, with circling movements of the arms and a froglike movement of the legs. |
| COUNTERMARKS | • countermarks n. Plural of countermark. • COUNTERMARK n. an additional mark put on a bale of goods belonging to several merchants, so that it may not be opened except in the presence of all the owners. |
| HALTERBROKEN | • halterbroken v. Past participle of halterbreak. • HALTERBREAK v. to break (as a colt) to a halter. |
| HETEROKARYON | • heterokaryon n. (Biology) A cell having two or more genetically different nuclei. • HETEROKARYON n. a cell, as in the mycelium of a fungus, that contains two or more genetically unlike nuclei. |
| KATHAROMETER | • katharometer n. (Sciences) A device used for analyzing gas mixtures by measuring their thermal conductivity. • KATHAROMETER n. an instrument measuring changes in composition of gases. |
| KERATOMETERS | • keratometers n. Plural of keratometer. • KERATOMETER n. an instrument for measuring curvature of the cornea. |
| KERATOPHYRES | • keratophyres n. Plural of keratophyre. • KERATOPHYRE n. a fine-grained soda trachyte. |
| LEATHERWORKS | • leatherworks n. A factory that manufactures leatherwork. • LEATHERWORK n. work in leather. |
| MASTERSTROKE | • masterstroke n. An action which demonstrates great skill or artistry. • master␣stroke n. Alternative form of masterstroke. • MASTERSTROKE n. a masterly performance or move. |
| METALWORKERS | • metalworkers n. Plural of metalworker. • METALWORKER n. one who works in metal. |
| PERESTROIKAS | • perestroikas n. Plural of perestroika. • PERESTROIKA n. (Russian) the period of reconstruction in Russia under Mikhail Gorbachev. |
| PLASTERWORKS | • plasterworks n. Plural of plasterwork. • PLASTERWORK n. plastering, often ornate in design, used to finish architectural constructions. |
| SKATEBOARDER | • skateboarder n. A person who rides a skateboard. • SKATEBOARDER n. one who skateboards. |
| SPATTERWORKS | • SPATTERWORK n. reproduction of designs by covering the surface with the pattern and spattering colour on the parts exposed. |
| STONEBREAKER | • stonebreaker n. A machine for crushing or hammering stone. • STONEBREAKER n. a person that breaks up stone; a machine used to break up stone. |
| STRATOTANKER | • STRATOTANKER n. a type of aeroplane which refuels other planes at high altitudes. |
| TROUBLEMAKER | • troublemaker n. One who causes trouble, especially one who does so deliberately. • troublemaker n. A complainer. • trouble-maker n. Alternative spelling of troublemaker. |
| WORKWATCHERS | • WORKWATCHER n. in horse-racing, a tout. |