obscure
= O =
off the trolley
octal forty /ok'tl for'tee/ n.
Hackish way of saying
"I'm drawing a blank." Octal 40 is the ASCII space
character, 0100000; by an odd coincidence, hex 40 (01000000)
is the EBCDIC space character. See wall.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.