Definitions

1. noun

One who hails, especially a person on a ship who shouts to get the attention of another ship or a shore-based person

“The hailer on the cruise ship helped us communicate with the dockworkers.”

2. verb

To hail, especially to shout to get someone’s attention

“The captain hailed the other ship to ask for help in navigating the storm.”

3. verb

To address or greet formally, especially in a ceremonial context

“The dignitary hailed the new ambassador to the podium.”