"Basara" is a word which expressed the social and cultural trends during the Northern and Southern Courts period (in the Japanese medieval period), which was actually used as a vogue word at that time.
ばさらとは、日本の中世、南北朝時代の社会風潮や文化的流行をあらわす言葉であり、実際に当時の流行語として用いられた。