凹(へこ)む

to sink; to dent; to feel discouraged

凹(へこ)み

dent; hollow; depression

凹(へこ)ませる

to dent; to make hollow

凹凸(おうとつ)

unevenness; bumps and hollows

凹面(おうめん)

concave surface

凹型(おうがた)

concave shape; concave type

凹形(おうけい)

concave form

凹状(おうじょう)

concave shape

この箱(はこ)は簡単(かんたん)に凹(へこ)む。

This box dents easily.

この眼鏡(めがね)には凹(おう)レンズが使(つか)われています。

Concave lenses are used in these glasses.