0 present participle of revise
1 to look at or consider again an idea, piece of writing, etc. in order to correct or improve it:
His helpfulness today has made me revise my original opinion/impression of him.
His publishers made him revise his manuscript three times.
2 to study again something you have already learned, in preparation for an exam:
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.