lex

Short definition from Wiktionary

Verb

1. 1
   To perform lexical analysis; to convert a character stream to a token stream as a preliminary to parsing.

Noun

1. 1
   A specific inflected form of a word; compare lexeme.
2. 2
   A Roman or Latin law (particularly in ancient Rome or in medieval Europe).

Proper noun

1. 1
   Lexington.
2. 2
   Lexus.
3. 3
   A pet form of the male given name Alexander.
4. 4
   A pet form of the female given names Alexandra, Alexia, and Alexis.