6 letters · 15 points in Scrabble
noun a membrane (one of 3) that envelops the brain and spinal cord
originBorrowed from New Latin mēninx, from Ancient Greek μῆνῐγξ (mênĭnx, “membrane of the eye; membrane enclosing the brain; eardrum”).
Etymology from Wiktionary, CC BY-SA 3.0