expression, noun which may take the genitive case particle 'no'
Describes something that exists or holds a title only nominally, without real substance or authority. Often used with nouns like 役職, 会長, or リーダー.
He is the president in name only, with no real authority.
only by name
Used when someone or something is known only by its name, without deeper acquaintance or substance. Often appears in patterns like 名前だけ知っている or 名前だけ聞いたことがある.
I know that author only by name.
That committee is a figurehead; it can't decide anything.
I've only heard the name of that restaurant.
Compound of 名前 (name) + だけ (only). The phrase is transparent and follows standard Japanese grammar.