to build a barricade in front of you in order to prevent anyone from coming in :
He had barricaded himself in his room.
to build a barricade in front of you in order to prevent anyone from coming in :
He had barricaded himself in his room.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005