This is a single hapax legomenon composed of six distinct elements (κράνιον, λείψανον, ὀδριμύς, τρίμμα, and the adjectival suffix -ο-) to form a compound adjective describing a 'cranial-bone-scraps-bitter-crumb' or 'bitter, crumbly bone-scraps from a skull.' The word is a quintessential example of Aristophanic 'comic hyperbole' (or 'grotesque compound'), where the author stacks morphemes to absurd lengths to satirize the extreme poverty and meager diet of the characters (specifically Praxagora's description of the food in the utopia of the women). The construction is syntactically regular for a compound adjective but semantically and morphologically unique in surviving Greek literature, serving as a focal point for the play's theme of inversion and the absurdity of the proposed social experiment.