凹 ⇒

• 凵         kǎn, receptacle
• 3         
• ?         

凹 ⇒

• 兕        sì, (meaning uncertain); rhinoceros (possibly female) or bull
• 垇        

凹 ⇒
凹         āo/wā, depressed/sunken/indented/concave/female (connector etc), variant of 窪|洼[wā]/(us...
凹陷         āoxiàn, to cave in/hollow/sunken/depressed
凹槽         āocáo, recess/notch/groove/fillister
凹凸         āotū, concave or convex/bumps and holes/uneven (surface)/rugged
凹坑         āokēng, concave depression/crater
凹凸不平         āotūbùpíng, uneven (surface)/bumpy (road)
凹面