gender in WordNet English dictionary

1. the properties that distinguish organisms on the basis of their reproductive roles
   "she didn't want to know the sex of the foetus"
   sex  gender  sexuality 
   
2. a grammatical category in inflected languages governing the agreement between nouns and pronouns and adjectives; in some languages it is quite arbitrary but in Indo-European languages it is usually based on sex or animateness
   gender  grammatical gender