boson /(bō"zŏn)/

bo·son

boson

n.
  1. A fundamental particle that obeys Bose-Einstein statistical rules, but not the Pauli exclusion principle; the spin value of a boson is always an integer. Examples of bosons are alpha particles, photons, and those nuclei which have an even mass number. (Physics)

boson

n.
  1. See Boatswain. [Obs.]