Dime Family History
Dime Name Meaning
perhaps from Middle English dime (Old French disme) ‘a tenth part’ paid to the King as a subsidy or to the Church as a tithe. The name might have been given to a tax or tithe collector. Compare (2). French Dîme apparently from Old French disme ‘tenth tithe’ perhaps for a tithe collector.
Source: The Oxford Dictionary of Family Names in Britain and Ireland, 2016