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A soft, light, cotton fabric of a plain weave, formerly used for undergarments.
[From Hindi nainsukh, pleasant : nain, eye (from Sanskrit nayanam, from nayati, he leads) + sukh, pleasure (from Sanskrit sukha-, running easily (of chariots), pleasant : su-, good; see (e)su- in Indo-European roots + kham, kha-, opening, axle-hole in the nave of a wheel; perhaps akin to Khotanese khā-, to open, and Sanskrit khā- Avestan xā-, spring (of water), fountain).]
(Textiles) a light soft plain-weave cotton fabric, used esp for babies' wear
[C19: from Hindi nainsukh, literally: delight to the eye, from nain eye + sukh delight, from Sanskrit sukha]
nain•sook(ˈneɪn sʊk, ˈnæn-)
a fine, soft cotton fabric, used for underwear and infants' wear.
[1780–90; < Hindi nainsukh]