He found the missing puzzle piece under the couch.
puzzle game
Frequency:
65
%
She enjoys playing puzzle games on her phone.
puzzle box
Frequency:
50
%
The puzzle box contained a hidden compartment.
Idiomatic Expressions for puzzle
Phrase: missing piece of the puzzle
Meaning: a crucial element or information that is needed to understand a situation or solve a problem
Usage: We're still missing a key piece of the puzzle that will help us make sense of the data.