A kanji repetition mark used to indicate that the previous kanji is repeated (e.g., 時々, 人々).
苗字は佐々木で、二文字目は『々』で表される。
His family name is Sasaki, and the second character is written with the repetition mark '々'.
『時々』は『時』の繰り返しを示すために『々』を使う。
'時々' uses the repetition mark '々' to show that '時' is repeated.
漢字の繰り返しを表す『々』は『同の字点』とも呼ばれる。
The kanji repetition mark '々' is also called '同の字点'.