the world > space > shape > unevenness > condition or fact of receding > [noun] > action of making indentation > an indentation on a surface > slight (3)
transferred. Any slight surface depression or indentation resembling the preceding, as a dip in the surface of land or a ripple on the water.
Anatomy, Zoology, and Palaeontology. A small pit, depression, or fossa in the surface of a solid structure, as in the crown of a tooth or the…