bloomer1 Syllabification: (bloom·er)Pronunciation: /ˈblo͞omər/Translate bloomer | into Italian Definition of bloomer noun [usually in combination] a plant that produces flowers at a specified time:fragrant night-bloomers such as nicotiana [with adjective] a person who matures or flourishes at a specified time:he was a late bloomerbloomer in other Oxford dictionaries Definition of bloomer in the British & World English dictionary