Starboard

My last clear memory was of being a passenger in a Burroughs irrelevant bus, bound for New Liverpool, when there was a loud bang, my head hit the seat in front of me, then a lady handed me a baby and we started filing out the starboard emergency exit, me with a cat in one arm and a baby in the other, and I saw a man with his right arm off-- [1, p. 1]

I didn't originally learn starboard from this book, but I did originally learn it from another Heinlein book, so I shall list it here. Starboard means "right side", particularly the right side of a vessel. An interesting article on its etymology, and its natural antonym, port side, can be found here.