1.
white, the color white
The color white. Used for the color itself and for things that are white.
2.
innocence, not guilty
Being innocent or not guilty, especially in the context of criminal investigations. Opposite of 黒 (guilty).
Usage
As a color noun, 白 modifies other nouns with の: 白のシャツ (a white shirt). The adjective form 白い is used for direct description. In detective and crime contexts, 白 means innocent/not guilty, contrasting with 黒 (guilty). In board games like go and chess, 白 refers to the white pieces or the player using them.