What is the meaning of Rosen?

Made of or consisting of roses.

Rosy; rose-coloured; ruddy.

singulative of ros (roses)

definite singular of rose

Rōmaji transcription of ろせん

to be angry

angry, furious

To boast; to self-aggrandise.

To flatter; to praise.

To talk, to say.

rosy (made of or like rose)

plural of rose

definite masculine singular of rose

rose; rosy

definite singular of ros

Source: wiktionary.org