noun. The angle formed by the meeting of the upper and lower eyelids at either side of the eye.

noun. The angle formed by the junction of the eyelids.

noun. In entomology: One of the upper and lower or anterior and posterior extremities of the compound eyes of insects.

noun. A corneous process of the clypeus, completely or partly dividing the compound eye. It is found in certain beetles, which thus appear to have four eyes.

noun. The corner where the upper and under eyelids meet on each side of the eye.

noun. either corner of the eye, where the eyelids meet

noun. either of the corners of the eye where the upper and lower eyelids meet