poolside adjective 1adverb 1noun 1forms 1 adjective1 •By the side of a pool.She was sunbathing on the poolside deckchair. adverb1 •Beside a pool.Andy Warhol was lunching poolside, amid the palm trees and exotic bird-of-paradise flowers. — 1989 noun1 •The area beside a pool.A ringing cell phone was no stranger at hotel poolsides, the upscale, plastic-dominated resort he'd been in for the past week being no exception. — 2013 formspoolsides