solutionsbook

noun
UK /səˈluːʃənzbʊk/
US /səˈluːʃənzbʊk/

A book that shows the answers to problems in a school book.

I checked my math homework against the solutionsbook.


OTHER MEANINGS

2. A book that explains how to fix problems or solve difficult situations.

The team used a solutionsbook to handle the computer trouble.

3. A collection of worked-out answers for a test or exercise set.

The teacher kept the solutionsbook in her desk.

4. A guide that gives step-by-step ways to solve puzzles or challenges.

He opened the puzzle solutionsbook when he got stuck.