ペンネーム (penneemu) Japanese meaning: pen name | Kotomora。
He publishes novels under a pen name.
Usage patterns
ペンネームを使うto use a pen name
She uses a pen name when publishing books.
ペンネームで〈動詞〉to do something (e.g. write) under a pen name
He writes novels under a pen name.
ペンネームを名乗るto go by a pen name
That writer goes by the pen name 'Hanako Yamada'.