= B =
binary four n.
[Usenet] The finger, in the sense of
`digitus impudicus'. This comes from an analogy between binary
and the hand, i.e. 1=00001=thumb, 2=00010=index finger,
3=00011=index and thumb, 4=00100. Considered silly. Prob. from
humorous derivative of finger, sense 4.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.