A‐re″o‐la (�), n.; pl.Areolæ (�). [L. areola, dim. of area: cf. F. aréole. See Area.] 1. An interstice or small space, as between the cracks of the surface in certain crustaceous lichens; or as between the fibers composing organs or vessels that interlace; or as between the nervures of an insect's wing.
2. (Anat. & Med.) The colored ring around the nipple, or around a vesicle or pustule.