'on-line' definitions:

On a regular route of a railroad or bus or airline system; "on-line industries" [syn: on-line, online] [ant: off-line]

Connected to a computer network or accessible by computer; "an on-line database" [syn: on-line, online] [ant: off- line]

Being in progress now; "on-line editorial projects" [syn: on-line(a), online]