| BUMBERSHOOTS | • bumbershoots n. Plural of bumbershoot. • BUMBERSHOOT n. (US slang) umbrella. |
| CHORUSMASTER | • chorusmaster n. Choirmaster. • CHORUSMASTER n. the conductor of a choir. |
| CUSTOMHOUSES | • customhouses n. Plural of customhouse. • custom␣houses n. Plural of custom house. • CUSTOMHOUSE n. an office or residence for customs officials, also CUSTOMSHOUSE. |
| CUSTOMSHOUSE | • customshouse n. Alternative form of custom house. • customs␣house n. Alternative form of custom house. • CUSTOMSHOUSE n. an office or residence for customs officials, also CUSTOMHOUSE. |
| HOUSEMASTERS | • housemasters n. Plural of housemaster. • house␣masters n. Plural of house master. • HOUSEMASTER n. a master in charge of a house in a boy's boarding school. |
| HOUSEMOTHERS | • housemothers n. Plural of housemother. • HOUSEMOTHER n. a woman in charge of children in an institution. |
| MESOGNATHOUS | • mesognathous adj. (Anatomy) having the jaws slightly projecting; between prognathous and orthognathous. • MESOGNATHOUS adj. having slightly projecting jaws. |
| MESOTHELIUMS | • MESOTHELIUM n. squamous cells lining peritoneum, pericardium, and pleura. |
| MESOTHORIUMS | • mesothoriums n. Plural of mesothorium. • MESOTHORIUM n. an old name for either of two radioactive elements. |
| MOTHERHOUSES | • motherhouses n. Plural of motherhouse. • MOTHERHOUSE n. the convent in which the superior of a religious community resides. |
| MUSHROOMIEST | • MUSHROOMY adj. of or like a mushroom. |
| MUTTONFISHES | • muttonfishes n. Plural of muttonfish. • MUTTONFISH n. a common food fish of the Western Atlantic. |
| NOURISHMENTS | • nourishments n. Plural of nourishment. • NOURISHMENT n. food, nutriment. |
| SOUTHERNISMS | • southernisms n. Plural of southernism. • SOUTHERNISM n. a southern expression. |
| SOUTHERNMOST | • southernmost adj. Farthest south. • SOUTHERNMOST adj. situated furthest south, also SOUTHERMOST, SOUTHMOST. |
| TECHNOMUSICS | • TECHNOMUSIC n. a type of fast, repetitive electronic dance music. |