1.
ornament; decoration; decorative object
An object used for decorative purposes, such as seasonal ornaments, display items, or accessories placed for visual appeal.
2.
figurehead; nominal role; mere show
Something or someone that exists in name only, without real function or authority. Used to describe a position or title that carries no actual power.
Usage
In sense 2, this word is often used critically to describe someone or something that lacks real substance or authority. The expression 飾り物にすぎない (nothing more than decoration) is especially common.