What does 信号 (xìnhào) mean in English?

Card 1743HSK Level 31743/2202
CARD1743
PROGRESS79%
信号
信號
xìnhào
information-signal; signal(Noun)
Click to reveal
← Previous↑ DeckNext →

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