Noun:

1. someone who takes notice;

   "a careful noticer of details"
   

2. someone who gives formal notice

noticevt.注意；留心；通知n.通知；注意；布告notice system中国notice period通知期限notice clause通知条款notice of fine罚款通知单notice English告示语notice or clai索赔通知单notice-boardn.公告栏；布告牌notice deposit通知存款notice of call[经] 催缴股款通知书notice of loss损失通知单