large crowd; mass of people
Almost always used in the set phrase 黒山の人だかり, meaning a dense, dark-looking crowd of people. The image is of a black mountain of people.
A large crowd had gathered at the accident scene.
Standard kanji spelling. Often used in the phrase 黒山の人だかり.
Compound of 黒 (black) and 山 (mountain), from the image of a dense crowd looking like a dark mountain.