sender

US /ˈsen.dɚ/
UK /ˈsen.dɚ/
"sender" picture
1.

a person who sends something

:
The package was returned to the sender because of an incorrect address.
Please write the sender's name and address clearly on the envelope.
2.

a device that transmits signals or messages

:
The radio sender broadcasted the news across the region.
A strong signal from the sender is crucial for clear communication.