up
to completely fill a hole or an opening and so prevent anything from passing through it :
One door had been blocked up.
My nose is blocked up.
up
to completely fill a hole or an opening and so prevent anything from passing through it :
One door had been blocked up.
My nose is blocked up.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005