Definition of "poacher"

A person who trespasses in order to take game illegally, one who poaches; a person who illegally takes animals or plants from the wild.  examples

A vessel with shallow cuplike compartments in which eggs are cooked over boiling water  examples

(soccer) An attacker with good movement inside the penalty box, see Wikipedia:Goal poacher.  quotations  examples

Any of type of fish in the family Agonidae, also known as alligatorfish, starsnout, hooknose and rockhead.  examples

(US, dialect) An American wigeon (Anas americana).  examples