COWSLIP Meaning of COWSLIP in English n.1 a primula, Primula veris, with fragrant yellow flowers and growing in pastures. 2 US a marsh marigold. Etymology: OE cuslyppe f. cu COW(1) + slyppe slimy substance, i.e. cow-dung Oxford English vocab. Оксфордский английский словарь. 2012