Binary (Assemblage 23 song)
WordNet
adjective
(1) Consisting of two (units or components or elements or terms) or based on two
"A binary star is a system in which two stars revolve around each other"
"A binary compound"
"The binary number system has two as its base"
(2) Of or pertaining to a number system have 2 as its base
"A binary digit"
noun
(3) A system of two stars that revolve around each other under their mutual gravitation