noun

• (often in the plural) The ability to persuade, delight or arouse admiration.
  "He had great personal charm."
• (particle physics) A quantum number of hadrons determined by the number of charm quarks and antiquarks.
  "In trying to understand the long life of the psi particle, physicists postulated the notion of “charm.” Charm, they say, prevents the “easy” decay of particles and thus prolongs their lifetimes. U particles, Dr. Pert said, may carry the property of charm."
• (finance) A second-order measure of derivative price sensitivity, expressed as the instantaneous rate of change of delta with respect to time.
• (graphical user interface, Microsoft Windows) An icon providing quick access to a command or setting.
  "Undoubtedly one of the most important pieces to navigating Windows 8, charms are actually not visible until a command to show them is given."

verb

• (transitive) To use a magical charm upon; to subdue, control, or summon by incantation or supernatural influence; to ensorcel or exert a magical effect on.
  "After winning three games while wearing the chain, Dan began to think it had been charmed."
• (obsolete, rare) To make music upon.
  "But ah my corage cooles ere it be warme, / For thy, content vs in thys humble ſhade: / Where no ſuch troublous tydes han vs aſſayde, / Here we our ſlender pipes may ſafely charme."