noun

1. 1. a chanted word, phrase, or verse assumed to have magic power to help or hurt; incantation
   2. the chanting of such a word, phrase, or verse
2. any object assumed to have such power, as an amulet or talisman
3. any trinket worn as a decoration on a bracelet, necklace, watch chain, etc.
4. any action or gesture assumed to have magic power
5. a quality or feature in someone or something that attracts or delights people
6. Particle Physics an individuating property of quarks and other elementary particles: it is expressed as a quantum number, with +1 used of a particle that has charm (charmed particle) and 0 used of one that does not

Etymology: ME charme < OFr < L carmen, song, verse, charm < *canmen < canere, to sing: see chant

transitive verb

1. to act on as though by magic; seemingly cast a spell on
2. to protect from harm as though by magic
3. to attract or please greatly; enchant; allure; fascinate; delight

intransitive verb

1. to practice magic
2. to be charming; please greatly