1. On a regular route of a railway or bus or airline system
   - on-line 
2. Connected to a computer network or accessible by computer
   - on-line 
3. Being in progress now
   - on-line

See also: connected, current, machine-accessible

Encyclopedia: Online

• trash heap
• trash pickup
• trash pile
• trashed
• trashiness
• trashman
• trashy
• Trasimeno
• trass
• trattoria
• Traubel
• trauma
• traumatic
• traumatic epilepsy
• traumatically
• traumatise
• traumatism
• traumatize
• traumatology
• traumatophobia
• Trautvetteria
• Trautvetteria carolinensis
• travail
• trave
• travel