This is the 2619th most frequent Japanese word.
振り
"振り" (furi) refers to "movement," "swing," or "appearance/behavior" depending on context.
The word '振り' is part of the verb '振り返る', which means 'to turn around'.
彼は急に振り返って私に挨拶した。
He suddenly turned around and greeted me.
'振り' here refers to one's appearance, demeanor, or behavior, often in a figurative sense.
その話は彼女の振りを見ながら聞いた。
I listened to the story while observing her behavior.
'振り返り' combines '振り' with '返り', making '振り' part of a compound noun meaning 'reflection' or 'review'.