Italian word binario comes from Latin binus, and later Latin binarius (Containing or consisting of two things. Binary.)
binus (Latin)
(chiefly plural) in pairs. (chiefly plural) two each. Double, twofold, binary.
binarius (Latin)
Containing or consisting of two things. Binary.
binario (Italian)
(railway) line, track, platform. Rail, railway, railroad Binary.