slowcoach

plural slowcoaches

1. IrelandUKinformalA person, especially a child, who moves slowly.

   Hey, you slowcoaches at the back! Get a move on!

   2 more examples

   They were both very quiet, respectable people; one of them paid the bill and went out; the other, who seemed a slower coach altogether, was some minutes longer getting his things together.

   1911, Chesterton, The Innocence of Father Brown, The Blue Cross

   Though as yet they only smile / At how slow I do a mile, / With tolerant reproach / For me as an Old Slow Coach.

   1962, Robert Frost, “Some Science Fiction”, in In the Clearing, New York: Holt, Rinehart & Winston, page 89

   Synonyms: plodder, sluggard, slowpoke

2. IrelandUKinformalA person who is slow on the uptake; one who does not comprehend new ideas quickly.