grúinafnorðkarlkyna, m. [grúa], a crowd, swarm, prob. akin to grúfa; metaph. from ants, insects, maggots, or the like: in compds, mann-grúi, a crowd of men.Skammstafanir og tilvitnanirm.karlkyn (e. masculine)prob.probably.metaph.metaphorical, metaphorically.