The kanji 伯 primarily signifies "elder brother" or "chief" and can also denote the first in a line or a lineage, often carrying connotations of respect and seniority. It often implies a position of authority or a leading role within a group or family.

・On-yomi (音読み): ハク (haku) ・Kun-yomi (訓読み): None, or rarely used as a standalone Kun-yomi.

⚫︎ 伯父 (おじ) Translation: Uncle (specifically, your father's elder brother) ⚫︎ 伯爵 (はくしゃく) Translation: Count (a title of nobility) ⚫︎ 伯仲 (はくちゅう) Translation: Being equal; being on par (often used to describe things as being closely matched)

Unfortunately, I am unable to provide information about the origin and formation of the kanji character 伯, as it is difficult to find reliable information regarding its origin and formation.