| BROTHERLIEST | • BROTHERLY adj. like a brother. |
| BUTTERFLYERS | • butterflyers n. Plural of butterflyer. • BUTTERFLYER n. a swimmer who does the butterfly stroke. |
| 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. |
| FLUTTERBOARD | • flutterboard n. (US) A buoyancy board made of foam, used to support the body when in water. • FLUTTERBOARD n. a kind of swimming aid, a kickboard. |
| GLOBETROTTER | • globetrotter n. A person who travels often to faraway places. • globe-trotter n. Alternative form of globetrotter. • globe␣trotter n. Alternative spelling of globetrotter. |
| INTERORBITAL | • interorbital adj. Between orbitals. • interorbital adj. Between orbits. • interorbital n. (Zoology) Any of the scales between the orbits. |
| IRREBUTTABLE | • irrebuttable adj. Not rebuttable. • IRREBUTTABLE adj. not capable of being rebutted. |
| IRRITABILITY | • irritability n. The state or quality of being irritable; quick excitability. • irritability n. (Physiology) A natural susceptibility, characteristic of all living organisms, tissues, and cells, to… • irritability n. (Medicine) A condition of morbid excitability of an organ or part of the body; undue susceptibility… |
| OBLITERATORS | • obliterators n. Plural of obliterator. • OBLITERATOR n. one who obliterates. |
| PROTRACTIBLE | • protractible adj. Able to be protracted or extended. • PROTRACTIBLE adj. able to be thrust out, also PROTRACTILE. |
| RATTLEBRAINS | • rattlebrains n. Plural of rattlebrain. • RATTLEBRAIN n. a shallow, voluble, volatile person. |
| SURREBUTTALS | • surrebuttals n. Plural of surrebuttal. • SURREBUTTAL n. a plaintiff's evidence or presentation of evidence, in response to a defendant's rebuttal. |
| TEREBRATULAE | • TEREBRATULA n. a member of Terebratula, the lampshell genus of brachiopods, with perforated beak. |
| TEREBRATULAS | • terebratulas n. Plural of terebratula. • TEREBRATULA n. a member of Terebratula, the lampshell genus of brachiopods, with perforated beak. |
| TRITUBERCULY | • trituberculy n. (Zoology, obsolete) A theory of the development of mammalian molar teeth. • TRITUBERCULY n. the state of being tritubercular, having three tubercles or cusps. |