gender (n.) Look up gender at Dictionary.com
c.1300, "kind, sort, class," from Old French gendre (12c., Modern French genre), from stem of Latin genus (genitive generis) "race, stock, family; kind, rank, order; species," also (male or female) "sex" (see genus) and used to translate Aristotle's Greek grammatical term genos.

The grammatical sense is attested in English from late 14c.; the male-or-female sense from early 15c. As sex took on erotic qualities in 20c., gender came to be the common word used for "sex of a human being," often in feminist writing with reference to social attributes as much as biological qualities; this sense first attested 1963. Gender-bender is first attested 1980, with reference to pop star David Bowie.
gender (v.) Look up gender at Dictionary.com
"to bring forth," late 14c., from Old French gendrer, from Latin generare "to engender" (see generation). Related: Gendered; gendering.