say it: SKOOL-buuk
schoolbook is a noun meaning "a book prepared for use in schools or colleges". It carries one recorded sense.
a book prepared for use in schools or colleges
“his economics textbook is in its tenth edition”
“the professor wrote the text that he assigned students to buy”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for schoolbook come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.