TRN
TRN serves as the IATA code for Turin’s airport and is also the ticker for Trinity Industries, a major railcar manufacturer, with occasional use for internal government notices and local news outlets.
Miscellaneous
Transaction Reference Number
Topology Representing Networks
Toms Robbing Numbers
Training Resource Network
Topic Reply Notification
Target Ring Number
The Robotech Network
The Resource Network
The Reserves Network
Talk Radio Network