lexicon

Short definition from Wiktionary

Noun

1. 1
   The vocabulary of a language.
2. 2
   A dictionary that includes or focuses on lexemes.
3. 3
   A dictionary of Classical Greek, Hebrew, Latin, or Aramaic.
4. 4
   The lexicology of a programming language. (Usually called lexical structure.)
5. 5
   Any dictionary.
6. 6
   The vocabulary used by or known to an individual. (Also called lexical knowledge.)
7. 7
   A set of vocabulary specific to a certain subject.
8. 8
   A set of vocabulary specific to a certain subject: A list thereof.

Verb

1. 1
   To add to a lexicon.
2. 2
   To shorten a soundtrack to fit a shortened version of a movie.