noun

• (mathematics) A proposition proved or accepted for immediate use in the proof of some other proposition.
• (linguistics, lexicography) The canonical form of an inflected word; i.e., the form usually found as the headword in a dictionary, such as the nominative singular of a noun, the bare infinitive of a verb, etc.
• (psycholinguistics) The theoretical abstract conceptual form of a word, representing a specific meaning, before the creation of a specific phonological form as the sounds of a lexeme, which may find representation in a specific written form as a dictionary or lexicographic word.
• (botany) The outer shell of a fruit or similar body.
• (botany) One of the specialized bracts around the floret in grasses.
• (rare) A female given name