割 - DIVIDE Your Mask with this Sword

Readings & Meanings:

カツ

わ（る）

さ（く）

divide

Common Usage:

割り切れる

割り切れない

割引き

分割

Examples:

４は２で割り切れる。

友達を見捨てて割り切れない思いをしている。

ハンドバッグを三割引きで買った。

土地を分割して譲渡した。

Translations:

4 is divisible by 2.

I feel bad for neglecting my friends.

I bought this handbag at 30% off.

We transferred a portion of land.

Radical:

The Katana radical, 刀. You can see it unsheathed on the right.

The phonetic is a kanji we've already covered: 害. It means damage or harmful, but it is a pictograph of someone's mouth being covered.

So, if 害 is a mouth being cut off from speech, the addition of 刀 emphasizes the "cut off" part.

References:

http://www.kanjinetworks.com/indices/radindex.html
http://www.thejapanesepage.com/node/kanji/7.htm