1. An English ball game similar to baseball
   "Rounders is often played in schools across the UK"

1. A dissolute person; usually a man who is morally unrestrained
   "The rounder's wild lifestyle eventually caught up with him";
   - libertine, debauchee [archaic]
    
2. A tool for rounding corners or edges
   "The carpenter used a rounder to smooth the sharp edges of the wooden table"

Type of: bad person, ball, ball game, baseball, baseball game, tool

Encyclopedia: Rounders