concave

On-Yomi: オウ — Kun-Yomi: くぼ.む、へこ.む、ぼこ

Koohii stories:

1) [hella] 4-3-2007(105): The letter "U" is concavely written.

2) [xiteru] 9-10-2007(44): Concave has a concave shape.

3) [geekdiva] 30-11-2005(22): Stroke order: I took a step down into the cave. A park ranger threw down a line to me from the opposite top ridge, then waited. My friend went down to the lowest passage to look for me, then the ranger threw another line down to her.

4) [oohansel] 21-7-2009(11): Concave is like a vagina.

5) [electrohaze] 16-4-2012(8): Her CONCAVE 凹 pussy was fucked by my convex 凸 cock.