A large rodent covered with sharp quills

A term used metaphorically to describe someone difficult to approach

ऐसा व्यक्ति जिसे पास जाना कठिन हो

English Usage: She has a porcupine personality, always defensive and prickly.

Hindi Usage: उसकी व्यक्तित्व कांटेदार साही की तरह है, हमेशा सुरक्षात्मक और चुभने वाला।