vanishing spray
noun [ C or U ] uk/ˈvæn.ɪ.ʃɪŋ ˌspreɪ/ us/ˈvæn.ɪ.ʃɪŋ ˌspreɪ/
消散性喷剂（足球比赛中罚任意球前，裁判用来在草皮上离罚球点10码远处标明防守队员站立位置的喷剂）
a coloured liquid that can be sprayed onto a football pitch to make a temporary mark ten yards away from where a free kick is to be taken, used to show the defenders where to stand