| COLIFORMS | • coliforms n. Plural of coliform. • COLIFORM n. any of a group of rod-shaped bacteria typified by Escherichia coli. |
| FIREROOMS | • firerooms n. Plural of fireroom. • FIREROOM n. a room containing a ship's boilers. |
| FOOTMARKS | • footmarks n. Plural of footmark. • FOOTMARK n. a mark left by the foot. |
| FOREBOOMS | • forebooms n. Plural of foreboom. • FOREBOOM n. the boom of a ship's foremast. |
| FOREDOOMS | • foredooms v. Third-person singular simple present indicative form of foredoom. • FOREDOOM v. to doom in advance. |
| FORMWORKS | • formworks n. Plural of formwork. • FORMWORK n. boxes for holding setting concrete. |
| FOURSOMES | • foursomes n. Plural of foursome. • FOURSOME n. a group of four. |
| IODOFORMS | • iodoforms n. Plural of iodoform. • IODOFORM n. a lemon-yellow crystalline compound of iodine with a saffron-like odour, used as an antiseptic. |
| MOONROOFS | • moonroofs n. Plural of moonroof. • moon␣roofs n. Plural of moon roof. • MOONROOF n. the transport roof of a motor car. |
| MOORFOWLS | • moorfowls n. Plural of moorfowl. • MOORFOWL n. a red, or black, grouse. |
| POSTFORMS | • postforms n. Plural of postform. • postforms v. Third-person singular simple present indicative form of postform. • POSTFORM v. to shape subsequently. |
| PROFORMAS | • proformas n. Plural of proforma. • pro␣formas n. Plural of pro forma. • PROFORMA n. an invoice made out to show the price of goods, the goods being paid for before dispatch. |
| SHELFROOM | • shelfroom n. (Countable) A room fitted with shelves for storage. • shelfroom n. (Uncountable) Shelving space. • SHELFROOM n. space or accommodation on shelves. |
| STAFFROOM | • staffroom n. A room set aside for the use of staff. • STAFFROOM n. a room in a school set aside for the teaching staff. |
| STYROFOAM | • styrofoam n. Expanded polystyrene foam, such as is used in cups and packaging. • STYROFOAM n. (tradename) a type of expanded plastic made from polystyrene. |