IPA: /ˈhændbʊk/
KK: /ˈhændbʊk/
A small book that gives information or instructions about a specific topic or subject.
I always keep a handbook on gardening to help me with my plants.
Handbook → It is formed from "hand" (from Old English "hand", meaning the part of the body at the end of the arm) and "book" (from Old English "bōc", meaning a written work or volume). The word "handbook" refers to a book that is designed to be a practical guide or reference that one can easily handle or use.
Think of a 'hand' as something you can easily hold and a 'book' as a written guide — a handbook is a guide that you can easily handle.