- tileA regularly-shaped slab of clay or other material, affixed to cover or decorate a surface, as in a roof-tile, glazed tile, stove tile, carpet tile, etc.
- tegulaA small sclerite situated above the base of the costal vein in the wings of various insects, and attached to the anterolateral portion of the mesonotum.
- tuilleAn armor plate hanging down from the breastplate or fauld to cover the thigh, either below or as part of a tasse. (Possibly ahistorical, see etymology.)