Home › Words › L › letterbookletterbookletterbook · noun — A book in which letters (written correspondence) or copies of letters are kept.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom letter + book.nounA book in which letters (written correspondence) or copies of letters are kept.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.ledger 61% match — A book for keeping notes; a record book, a register. vs letterbook →bookstaff 58% match — A letter, a letter of the alphabet, a written character. vs letterbook →letterly 58% match — Befitting or characterised by letters (posted messages). vs letterbook →daybook 57% match — A daily chronicle; a diary. vs letterbook →copybook 57% match — A student's exercise book containing samples of good handwriting to be copied. vs letterbook →datebook 57% match — A book in which appointments are kept, each listed beside the day when it occurs. vs letterbook →lettercol 57% match — A section of a periodical in which the letters of readers are published. vs letterbook →letterlocking 56% match — The securing of a letter without an envelope, by folding and cutting so that portions of the paper can be interlocked. vs letterbook →