piece something ↔ together phrasal verb ( see also ↑ piece )
1 . to use all the information you have about a situation in order to discover the truth about it:
Police are trying to piece together his movements before the murder.
Her early life has been pieced together from several different sources.
2 . to put all the separate parts of an object into the correct order or position:
He slowly pieced together the torn fragments of a letter.