signal
US /ˈsɪɡnəl/
・UK /'sɪɡnəl/
A2
verb
- To be evidence/an indication something will happen
- To make a noise or motion to tell someone to start
noun
- Evidence or an indication something will happen
- Movement of a hand or other means to send messages
- Act/sound that tells people to do/start something
- Road-side lights that direct traffic to go or stop
- Sound and light waves carrying TV and radio data
adjecitve
- Most important or most noticeable