This is the 446th most frequent Greek word.
μιλώντας
"Speaking" or "while speaking."
In this sentence, 'μιλώντας' describes how the action of speaking was performed.
Η Ελένη με κοίταξε μιλώντας με ευγένεια.
Eleni looked at me, speaking politely.
'Μιλώντας' functions as a means of describing the circumstances under which the action occurred.
Μιλώντας στους μαθητές, ο δάσκαλος εξήγησε τη διδασκαλία.
Addressing the students, the teacher explained the lesson.
Here, 'μιλώντας' serves as a participle representing an action happening simultaneously.