noun
sign out front; front (for someone)
Literally a signboard displayed outside a shop or business. Figuratively, it refers to a person or thing used as a public front to conceal real activities or identity.
あの店の表看板には大きく「ラーメン」と書いてある。
The sign out front of that shop says 'Ramen' in big letters.
彼は表
He is just a front; the real manager is someone else.