diǎn
dot
Phonosemantic compound. 黑 represents the meaning and 占 represents the sound.
Evolution

Seal script
Shuowen (~100 AD)Regular script
ModernDefinitions
diǎn
dot, speck, spot; point, degree; point; dot; drop; speck; o'clock; point (in space or time); to draw a dot; to check on a list; to choose; to order (food in a restaurant); to touch briefly; to hint; to light; to ignite; to pour a liquid drop by drop; (old) one fifth of a two-hour watch 更[gēng]; dot stroke in Chinese characters; classifier for items
Sources