Diaphanous

adjective \dī-ˈa-fə-nəs\
—used to describe cloth that is very thin and light

Full Definition of DIAPHANOUS
1: characterized by such fineness of texture as to permit seeing through
2: characterized by extreme delicacy of form : ethereal 3: insubstantial, vague
— di·aph·a·nous·ly adverb
— di·aph·a·nous·ness noun

Examples of DIAPHANOUS

Origin of DIAPHANOUS
Medieval Latin diaphanus, from Greek diaphanēs, from diaphainein to show through, from dia- + phainein to show
First Known Use: 1614

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Such a rich and erotic word. It’s interesting to see what it currently means to Google.