round.er
n.（名词）One that rounds, especially a tool for rounding corners and edges.倒圆式倒角工具：尤指把边和角弄圆的工具One, such as a security guard, who makes rounds.巡行者：如来回巡逻的警卫人员A dissolute person.浪荡子，放荡的人Sports 【体育运动】 A boxing match that goes on for a specified number of rounds. Often used in combination:多回合拳击赛：持续一定回合的拳击赛。常用以构成复合词：例句：a five-rounder.五回合拳击赛
rounders (used with a sing. verb)An English ball game similar to baseball. rounders （与单数动词连用）跑注式棒球：类似棒球的一种英式球赛
