-d.ə(r) noun
( -s )
Etymology: Latin, slave in ancient Rome who attended a candidate for office to tell him the names of influential persons whom they met, slave who told his master the names of the other slaves, from nomen name + -clat- (from calare to call) + -or — more at claim
1. : a book containing collections or lists of words : vocabulary
2.
a. : a person who calls persons or things by their names
b. archaic : one who announces the names of guests or of persons generally
3. : one who gives names to or invents names for things : a classifier of objects under appropriate names
the nomenclator of the English Gothic styles — Tudor Edwards