Ornamental things have no practical function but are put in a place because they look attractive.
例句
...ornamental trees.觀賞樹
ADJ-GRADED
裝飾性的；美觀的
Something that is ornamental is attractive and decorative.
例句
...ornamental plaster mouldings.裝飾性石膏線腳
英漢詞典釋義
adj.
裝飾的,裝飾用的
ornamental beds of roses觀賞用玫瑰花壇The ornamental ironwork lends a touch of elegance to the house.鐵藝飾件為房子略添雅致。The stream was dammed up to form ornamental lakes.溪流用水壩攔擋起來,形成了裝飾性的湖泊。
英英詞典釋義
Noun
1. any plant grown for its beauty or ornamental value
Adjective
1. serving an esthetic rather than a useful purpose;
"cosmetic fenders on cars""the buildings were utilitarian rather than decorative"