Definition of pedants:
(n) :
A person who makes an excessive or tedious show of their knowledge, especially regarding rules of vocabulary and grammar.
(n) :
A person who is overly concerned with formal rules and trivial points of learning.
(adj) :
Pedantic.
(n) :
(archaic) A teacher or schoolmaster.
(v) :
(rare, humorous) To be or act as a pedant.