postbutton
nounUK /ˈpəʊstˌbʌtən/
US /ˈpoʊstˌbʌtən/
A button you press to send something on the internet.
Click the postbutton to share your picture with your friends.
OTHER MEANINGS
2. A button on a machine that posts or stamps an item.
The clerk pressed the postbutton to stamp the letter.
3. A small button used to fasten a post or pole in place.
Tighten the postbutton so the fence post stays upright.
4. A button that marks a post as published in a forum.
The moderator used the postbutton to approve the message.