Question: what is armful of books?
Answer: armful. From Longman Dictionary of Contemporary Englisharm‧ful /ˈɑːmfʊl $ ˈɑːrm-/ noun [countable] the amount of something that you can hold in one or both armsarmful of an armful of booksExamples from the Corpusarmful• So I gradually amassed armfuls of small twigs, which I carried back to my cave.