Phrasal verbs are two or more words that together act as a completely new verb with a meaning separate from those of the original words.
Phrasal Verb:
piece something out
Meaning / Example:
1. to add patches or pieces to something to make it complete. > There is not quite enough cloth to make a shirt, but I think I can piece it out with some scraps of a complementary color for the collar.
2. to add missing parts to a story, explanation, or narrative to make it make sense. > Before she passed out, she muttered a few things and we were able to piece the whole story out from that.