What does Dom mean?
Dom is a rare first name for men but a very popular surname for all people (#41924 out of 150436, Top 28%). (2000 U.S. Census)
Below is a graphed comparison of the popularity of the boy name Dom and affiliated names. Prominent varying forms of Dom (#unlisted) are Domenic, Domenico, Domingo, Domini, Dominic (#69 a year ago), Dominick (#310), Dominik (#616), Dominique (#946) and Nick. Adoption of these boy names reached its peak during the years 1910-1919 (usage of 0.3879%) and has become significantly lower since (usage 0.2288%, down 41%), with the versions Domenic, Domenico, Domingo, Dominique and Nick falling out of style. Dominic (#69), Dominick (#310) and Dominik (#616) are three of the more fashionable baby names in this list. (Top 1000 Birth Names Records, 2014)