noun.
In anatomy: The bone of the upper arm, extending from the shoulder-joint to the elbow-joint.
noun.
The proscapula of fishes: so called by Cuvier and his followers.
noun.
The mesocoracoid of fishes: so designated by Owen and others.
noun.
The shoulder or upper arm and associated parts.
noun.
In entomology: The femur of the fore leg; the brachium.
noun.
The subcostal or sub-marginal vein of the fore wing of certain hymenopters.
noun.
The front corner of the thoracic region seen from above; the shoulder: this may be the prothorax, as in Coleoptera, or the mesothorax, as in Diptera.