alternate definition: 1970's derogatory term for women's literature. Now archaic.
Concept was that writing was either literature or it was not literature, so any attempt to manufacture a subgroup was somehow denigrating the legitimate body of work.
Sprang from growth of Women's Studies programs at US universities.
Sometimes also used to describe Comparative Literature, although usage may have faded into obscurity.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.