Informal One that moves, works, or acts slowly.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "slowpoke" in a sentence
"Well, I got my mile time down a minute from December (to 10: 57 -- yes, I'm a slowpoke) and my mile and a half down to to 16: 49."
"The 'transonic' stage of a 7mm Weatherby is at about 1400 yards, a 30-06 at about 1200 yards, and my old slowpoke .35 Whelen is at 700 yards."
"“Move your ass, then, slowpoke,” he said, kicked the bike into life, and charged down the sloping ravine toward the maglev train."