Definition: Washington, D.C., the capital of the United States.
The sign WASHINGTON must be accompanied by #DC. It's the same sign for the state of Washington (WASHINGTON+STATE).
Gloss: WASHINGTON, #DC IX1/\ TORONTO, CANADA IX2/\ DRIVE IX1 CL:pathline(aah) IX2 AROUND 8 1/2 HOUR DRIVE CL:pathline.
English equivalent: The driving time from Washington, D.C. to Toronto, Canada is approximately eight and half hours.
Notice that the signer holds her base (non-dominant) hand as a reference for D.C. while establishing the other reference for Toronto.