School with mean person teaching one who's not very bright?

• Someone who moves slowly
• Sluggish type’s second dejected trainer
• Owls, bizarrely, train tortoise or snail?

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM OTHER ENTRIES ▪ Come on, slowcoach ! If you don't hurry up, we'll be late.

Wiktionary Word definitions in Wiktionary
n. (context derogatory UK English) a person who moves slowly.

WordNet Word definitions in WordNet
n. someone who moves slowly; "in England they call a slowpoke a slowcoach" [syn: plodder , slowpoke , stick-in-the-mud ]