Meanings of exchanging bows in English

Mr. Sabin looked searchingly around, exchanging bows with those whose faces were familiar to him.

While exchanging bows with him, I tried my best to use my Zen mind to suppress my aversion.

Chase made his way boldly to the nearest platform, exchanging bows with the surprised Von Blitz and the saturnine Rasula, who stood quite near.

Meetings on the stairs, you know, and exchanging bows and small talk. He hated those trivial conventionalities of society, in which, other people delight.

(Exit the Marquis, after exchanging bows with Raoul.)

"Where are you staying, Madge?" asked Elfreda when the two groups of girls had finished exchanging bows and smiles.