Meaning

noun a fine grained mineral having a soft soapy feel and consisting of hydrated magnesium silicate; used in a variety of products including talcum powder

verb apply talcum powder to (one's body)

originFrom Middle French talc, from Arabic طَلْق (ṭalq), from Persian تلک (talk), from Middle Persian [Term?] (“medicament”).

Etymology from Wiktionary, CC BY-SA 3.0