Starboard is the right-hand side of a boat, looking forward. To starboard, the starboard side, starboard light.
Port and starboard are used instead of left and right because they do not change with which way the speaker is facing. The starboard light is green and the port one red. The name has nothing to do with stars: it is steer-board, from the steering oar that hung on the right side of old ships.
1nounstarboardThe right-hand side of a boat, looking forward.
“The captain turned the ship hard to starboard to avoid the rocks.”
starboard is a side of a vessel.
Old English steorbord is steer plus board, from the steering oar hung on the right side of a ship.
Proto-West Germanic
*steurubord
Old English
stēorbord
Middle English
sterbord
English, today
starboard
From Middle English sterbord, stere-bourd, stere-burd, from Old English stēorbord, from Proto-West Germanic steurubord, equivalent to steer + board, referring to ancient ships with the steering oar set to the right (to accommodate right-handed crew). Ships had to dock on their left (port) side because the steering oar on the right would get in the way, which is how the left became known as the port side.
Etymology from Wiktionary, CC BY-SA