A hard-wearing cotton fabric woven with stripes or checks:a nightcap in white dimity edged with lace[as modifier]:gay dimity curtains...
Truss a few starlets into whalebone corsets and swathe them in yards of dimity.
Origin
Late Middle English: from Italian dimito or medieval Latin dimitum, from Greek dimitos, from di- 'twice' + mitos 'warp thread'; the origin of the final -y is unknown.