Definition of pottier:
(n) :
A small, usually plastic, chamber pot used to toilet-train small children.
(n) :
(childish, humorous) Any other device or place for urination or defecation: a toilet; a lavatory; a latrine; an outhouse.
(n) :
A chamber pot.
(v) :
(intransitive, childish) Synonym of go potty.
(adj) :
(informal) Insane.
(adj) :
(golf) Easy to pot the ball on.