noun

• The vocabulary of a language.
• (lexicography, linguistics) A dictionary that includes or focuses on lexemes.
• A dictionary of Classical Greek, Hebrew, Latin, or Aramaic.
• (programming) The lexicology of a programming language. (Usually called lexical structure.)
• (rare) Any dictionary.
• The vocabulary used by or known to an individual. (Also called lexical knowledge.)
• A set of vocabulary specific to a certain subject.
• A list thereof.