southboundsouth‧bound /ˈsaʊθbaʊnd/ adjective, adverb

- southbound traffic
- The car was driving southbound on Route 43.
► northbound/southbound/eastbound/westbound bound
All eastbound trains have been cancelled due to faulty signals. ► the northbound/southbound etc exit· The northbound exit to the A139 will be closed until 6 a.m. on Monday.
adjectivesouthsoutherlysouthernsouthboundsouthernmostadverbsouthsouthward(s)southboundnounsouthsoutherner