What does 航线 (hángxiàn) mean in English?

Card 1029HSK Level 41029/3571
CARD1029
PROGRESS29%
航线
航線
hángxiàn
sea route; skyway(Noun)
Click to reveal
← Previous↑ DeckNext →

Reveal: Click/Space/Enter/↑↓/w/s/j/k•Navigate: ←→/h/l/a/d