Noun
a sheet (usually with elastic edges) tailored to fit a particular mattress
Source: WordNetThe set comes with three pieces — a fitted sheet and two pillowcases with envelope closures — and you get the option to add on a flat sheet, if desired. Source: Internet
Its weight isn’t the only selling point – the airy, mesh travel cot comes with a substantial mattress which snugly attaches onto the cot to prevent shifting and a fitted sheet too. Source: Internet
Ensemble includes a comforter, fitted sheet, flat sheet, standard sham, 1 decoratiev pillow and 1 standard reversible pillowcase. Source: Internet
Their premium French linen bedding sets come in 6 gorgeous duvet colors and include a white flat sheet, fitted sheet and two pillow cases. Source: Internet