Is Breaches a Plural?

The plural form of breach; more than one (kind of) breach.

Is it spelled breech or breach?

Breech refers either to pants or to the hind end of things (buttocks, the rear of a firearm). Breach is a violation of something (such as a contract) or a split or gap (as in "once more unto the breach").

Is there a word breach?

What does breach mean? A breach is a physical break or rupture, as in the hull of a ship. It also means a violation or infraction, as in a breach of trust.