monkey-pot
/ˈmʌŋkɪˌpɒt/noun
1The lidded woody capsule of any of several trees of the genus Lecythis (family Lecythidaceae), of tropical South America, which is used to trap monkeys; (more fully monkey-pot tree) a tree of the genus Lecythis or the family Lecythidaceae.
2A vessel used in tropical countries for cooling drinking water.
Origin
Mid 19th century; earliest use found in John Balfour (1808–1884), botanist. From monkey + pot.