Also spelled up-bound
adj
adv
Meanings
-
1
adj
moving upward, upstream, or in a direction conventionally regarded as up
The upbound steamboat struggled against the river current.
-
2
adv
upward or upstream
The freighter traveled upbound through the locks.
Thesaurus
Etymology
A compound of up + bound, with bound meaning 'going or intending to go toward.' In transport and river language, upbound describes movement upstream or toward the conventionally upper end of a route.