The Collaborative International Dictionary of English v.0.48:

Lecythis \Lec"y*this\ (l[e^]s"[i^]*th[i^]s), n. [NL., fr. Gr. 3
   an oil flask.] (Bot.)
   A genus of gigantic trees, chiefly Brazilian, of the order
   Myrtace[ae], having woody capsules opening by an apical
   lid. Lecythis Zabucajo yields the delicious sapucaia nuts.
   Lecythis Ollaria produces the monkey-pots, its capsules.
   Its bark separates into thin sheets, like paper, used by the
   natives for cigarette wrappers.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Monkey-pot \Mon"key-pot`\, n. (Zool.)
   The fruit of two South American trees (Lecythis Ollaria,
   and Lecythis Zabucajo), which have for their fruit large,
   pot-shaped, woody capsules containing delicious nuts, and
   opening almost explosively by a circular lid at the top.
   Vases and pots are made of this capsule.
   [1913 Webster]