The Ancient Romans distinguished fat into pinguedo or axungia, and adeps or servum; but writers often interchange the terms.
In pre-modern medicine, physicians made use of the axungia of the goose, the dog, the viper, and some others, especially that of humans, considered of "extraordinary service in the drawing and ripening of tumors, etc." (see attrahent)
From French axunge, adapted from Latin axungia 'axle grease' = axis 'axle' + ungere 'to grease'.