Meaning

noun United States computer entrepreneur whose software company made him the youngest multi-billionaire in the history of the United States (born in 1955)

noun a movable barrier in a fence or wall

noun a computer circuit with several inputs but only one output that can be activated by particular combinations of inputs

originFrom gate. A topographic name for someone who lived by the gates of a medieval walled town.

Etymology from Wiktionary, CC BY-SA 3.0