riddlepart

noun
UK /ˈrɪdəlpɑːt/
US /ˈrɪdəlpɑːrt/

A riddlepart is one piece of a puzzle or question that you solve.

She found the last riddlepart and finished the whole puzzle.


OTHER MEANINGS

2. A small section of a word puzzle that gives a hint.

Each riddlepart helped him guess the secret word.

3. One line or clue in a set of tricky questions.

The first riddlepart was easy, but the next one was hard.

4. A missing piece needed to complete a brain teaser.

We searched for the riddlepart that would solve the mystery.