potty

Etymology 1

From pot (“chamberpot”) + -y (“diminutive suffix”).

noun

1. A chamber pot.
2. A small, usually plastic, chamber pot used to toilet-train small children.
   If you just let him know you want him to go on the potty, or anything, he's miles away. 1940, William Carlos Williams, In the Money
   Mothers very often make the baby and themselves unhappy by setting the child on the potty every hour. 1949, Edith Buxbaum, Your Child Makes Sense: A Guidebook for Parents
3. (childish, humorous) Any other device or place for urination or defecation: a toilet; a lavatory; a latrine; an outhouse.

verb

1. (intransitive, childish) Synonym of go potty.
   If anybody needs to potty, do it now before we go.

Etymology 2

adj

1. (informal) Insane.
   The noise that the neighbour's kids were making was driving Fred potty.
2. (golf) Easy to pot the ball on.
   The Eastbourne Green is by no means a " potty " one, and happily belies its appearance. 1890, Golf...: A Weekly Record of "ye Royal and Auncient" Game
   "A potty little nine-hole affair at a hydro in the Midlands. My cousins stay there. Always will. Not but what the fourth and the seventh holes take some doing. You could manage it, though," he said encouragingly. 1909, Rudyard Kipling, The House Surgeon