• (n.) A journal of accounts; a primary record book in which are recorded the debts and credits, or accounts of the day, in their order, and from which they are transferred to the journal. Found on http://thinkexist.com/dictionary/meaning/daybook/
Day'book` (dā'bok`) noun A journal of accounts; a primary record book in which are recorded the debts and credits, or accounts of the day, in their order, and from which they are transferred to the journal. Found on http://www.encyclo.co.uk/webster/D/9