垢あか (aka)

タオルで垢あかをこすった

I scrubbed the dirt with the towel.

耳みみ垢あかを取って欲ほしい。

I want the wax cleaned from my ears.

あの子こはあかだらけだ。

The child is dirty.

歯垢しこうをとらなければなりません。

The plaque has to be removed.

歯垢しこうがずいぶん付ついていると思おもいますが。

I think I have a lot of plaque build up.

いつもあかだらけで、食事しょくじも満足まんぞくに与あたえられていない様子ようすでした。

He was always filthy and looked like he wasn't given enough food.

これを五衰（天人五衰）と称し、体が垢に塗れて悪臭を放ち、脇から汗が出て自分の居場所を好まなくなり、頭の上の花が萎む。

These changes are called Gosui (Tenjin Gosui) and when such changes occur, they stink with their body being covered in grime, they sweat from the underarms, they become less fond of the place where they reside and flowers on their heads wither.