To make clean. In particular to make satisfactorily clean. Usually used to describe the cleaning of a small room or small space.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "tidy up" in a sentence
"When Cleopatra’s three living children embarked for Rome in the care of the freedman Gaius Julius Admetus, they sailed alone; like Divus Julius when he had left Egypt, Octavian decided he may as well tidy up Syrian Asia and Anatolia before returning to Rome."
"He stripped back the sheet as far as the body's waist, showing the dark discolorations of decomposition and the efforts made to tidy up the radical post mortem incisions."