to cave in; hollow; sunken; depressed

(idiom) uneven (surface); bumpy (road)

Jia Pingwa (1952-), Chinese novelist

a long, narrow channel or depression cut into a surface, such as a fillister, often used for fitting or movement

pushed inward or hollowed out as a result of pressure or impact

having both depressions and protrusions; characterized by bumps and holes

a bowl-shaped cavity, typically one caused by an impact or explosion

intaglio printing plate (or a print made with it)

(physiology) gastric pits

(coll.) to strike a pose

to engrave or carve a design into a surface so that the image is recessed

a depression, col, or small valley in a mountain range

cocobolo (Dalbergia retusa)

a hole, depression, or hollow space in a surface

curving or sinking inward; forming a hollow or indentation

a printing process that creates raised or recessed relief images and designs in paper and other materials

crenelated; corrugated

(math.) concavity

bark of the tulip tree (Liriodendron chinense), used in traditional Chinese medicine (TCM)

fovea centralis (depression in the macula retina, most sensitive optic region)

a hollow or depression in a surface, such as a dent, indentation, notch, or pitting

die (printing, metalwork etc)