1. (n.) 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. (n.) The colored ring around the nipple, or around a vesicle or pustule.

O annular muscle annulus aureole chaplet circle circuit circumference circus closed circle corona coronet crown cycle diadem discus disk eternal return fairy ring garland glory halo lasso logical circle loop looplet magic circle noose orbit radius ring rondelle round roundel saucer sphincter vicious circle wheel wreath