adj

• (physical) Of shape:
  "We sat at a round table to make conversation easier."
• (physical) Of shape:
  "The ancient Egyptian demonstrated that the Earth is round, not flat."
• (physical) Of shape:
  "a round face, a round belly"
• (physical) Of shape:
  "Our child's bed has round corners for safety."

noun

• (countable, music) A song that is sung by groups of people with each subset of people starting at a different time.
• (UK) One slice of bread.
  "For breakfast I had two rounds of toast and a mug of tea."
• (art) A long-bristled, circular-headed paintbrush used in oil and acrylic painting.
• (sports) One of the specified pre-determined segments of the total time of a sport event, such as a boxing or wrestling match, during which contestants compete before being signaled to stop.
  "And though Fightville, an MMA documentary from the directors of the fine Iraq War doc Gunner Palace, presents it more than fairly, the sight of a makeshift ring getting constructed on a Louisiana rodeo ground does little to shake the label. Nor do the shots of ringside assistants with spray bottles and rags, mopping up the blood between rounds"

prep

• (rare in US) Alternative form of around.
  "I look round the room quickly to make sure it's neat."
• (used postpositively, rare in US) Alternative form of around.
  "The farmer fed his cow hay all the year round."

verb

• (transitive) To shape something into a curve.
  "The carpenter rounded the edges of the table."
• (intransitive) To become shaped into a curve.
  "The girl's figure, he perceived, was admirably proportioned; she was evidently at the period when the angles of childhood were rounding into the promising curves of adolescence."
• (with "out") To finish; to complete; to fill out; see also round out.
  "She rounded out her education with only a single mathematics class."
• (transitive, intransitive) To approximate (a number, especially a decimal number) by the closest whole number, or some other close number, especially a whole number of hundreds, thousands, etc.; see also round down, round up.
  "The exact amount was $101.65, but we rounded it to $100."