Barniz (en. Varnish)
/barˈniθ/
Slang Meanings
To make something more attractive or presentable.
That presentation needs a little varnish to impress us.
Esa presentación necesita un poco de barniz para impresionarnos.
To cover something with a false appearance.
Her smile was just a varnish; she was very worried inside.
Su sonrisa era solo barniz; estaba muy preocupado por dentro.