Master

Definition (Noun)
At Level 50 Notoriety, a pirate becomes a Mastered pirate - meaning they are as notorious as possible. Though some do NOT consider a pirate a MASTER pirate until all of their skills are maximized as well.

If a pirate is a master with their cutlass, sailing or other skill, they have reached Level 30 of that skill or 'mastered' it.

Definition (Verb)
To reach 'master' level Pirate at level 50 notoriety or skill level 30 on all weapons