Parry

Source Core Rulebook pg. 283
This weapon can be used defensively to block attacks. While wielding this weapon, if your proficiency with it is trained or better, you can spend an Interact action to position your weapon defensively, gaining a +1 circumstance bonus to AC until the start of your next turn.

Monk Unarmed Attacks

Iron Sweep

Weapons

Bo Staff, Clan Dagger, Main-gauche