To tie again; to tie something that has already been tied or was tied before.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "retie" in a sentence
"Run up and down a flight of stairs, jump in place, use the farther-away office printer, skip, take a walk, play ping pong, shoot baskets, dance, retie your shoelaces."
"When that happens you are done and might as well cut and retie."
"The stagiaires lower their bibs and retie their aprons around their waists."