noun

• (mathematics) A function, especially a function satisfying a certain property (e.g. continuity, linearity, etc.; see Usage notes).
  "Let f be a map from ℝ to ℝ"
• (entomology) Any of various nymphalid butterflies of the genera Araschnia (especially, Araschnia levana) and Cyrestis, having map-like markings on the wings.
• (UK, dated) The face.
  "And as the eye rested on him, he too filled me with pity and terror, for his map was flushed and his manner distraught. He looked like Jack Dempsey at the conclusion of his first conference with Gene Tunney, the occasion, if you remember, when he forgot to duck."
• (board games, video games) An imaginary or fictional area, often predefined and confined, where a game or a session thereof takes place.
  "I don't want to play this map again!"

verb

• (transitive) To represent by means of a map.
  "This large atlas maps the whole world in very great detail."
• (transitive) To create a map of; to examine or survey in order to gather information for a map.
  "The team is mapping the route of the new railway line."
• (intransitive, followed by a "to" phrase) To have a direct relationship; to correspond.
  "This doesn't map to my understanding of how things should work."
• (transitive, followed by a "to" phrase) To create a direct relationship to; to create a correspondence with.
  "Map "volume down" to the F2 key."

noun

• (aviation) Initialism of missed approach point.
• (travel) Initialism of modified American plan, a hotel rate that included accommodation, breakfast and dinner, but not lunch.
• (neurology) Initialism of microtubule-associated protein.
• (medicine) Initialism of mean arterial pressure.