Home › Words › S › shelfmarkshelfmarkshelfmark means the mark that shows the location or call number of a book or manuscript within a library; (loosely) synonym of call number.Among words judged in Lexicurio's Arena, shelfmark ranks #3,412 of 42,747 for Qualifying.EtymologyFrom shelf + mark.nounThe mark that shows the location or call number of a book or manuscript within a library; (loosely) synonym of call number.Definitions & examples from Wiktionary (CC BY-SA 3.0).