What is the meaning of rounder?

noun

• A dissolute person; usually a man who is morally unrestrained.
  • synonyms: libertine, debauchee
• A tool for rounding corners or edges.

adjective

• Having a circular shape.
  • synonyms: round, circular
• Of sounds. ( full and rich)
  • usage: "orotund tones"; "the rotund and reverberating phrase"; "pear-shaped vowels"
  • synonyms: orotund, rotund, round, pear-shaped
• Mathematics) expressed to the nearest integer, ten, hundred, or thousand. (
  • usage: "in round numbers"
  • synonyms: round

adverb

• From beginning to end; throughout.
  • usage: "It rains all year round on Skye"; "frigid weather the year around"
  • synonyms: round, around