| Word | Definitions | Synonyms |
|---|---|---|
| topsail | (noun) a sail (or either of a pair of sails) immediately above the lowermost sail of a mast and supported by a topmast | - |
| topside | (noun) (usually plural) weather deck; the part of a ship's hull that is above the waterline | - |
| topsoil | (noun) the layer of soil on the surface | Synonyms: surface soil |
| topspin | (noun) forward spin (usually of a moving ball) that is imparted by an upward stroke | - |