N-COUNT
（装饰帽子、家具等的）绒球；（美国橄榄球比赛时拉拉队用的）塑料丝球
A pom-pom is a ball of threads which is used to decorate things such as hats or furniture. In the United States, cheerleaders wave large pom-poms at football matches.
例句
...wide-brimmed hats with red pom-poms worn by the local girls.
当地女孩戴的宽边、有红色绒球的帽子