ascella (Latin) comes from Latin axilla, from German Achsel, from Old High German ahsala, from Proto-Germanic ahslō, from Proto-Indo-European h₂eḱs-l-eh₂, from Proto-Indo-European h₂eḱs-, from Proto-Indo-European h₂eǵ- — to drive.
ascella (Latin): wing; pinion; armpit, axilla