jícara

a small faience container used to serve hot chocolate or other hot beverages; a small, woody container, typically made from the fruit of the calabash tree (Crescentia cujete) or Mexican calabash (Crescentia alata) and used (especially in rural Mexico) to serve hot food in order to preserve its temperature; calabash; head; Part, or square, of a flat chocolate bar, which can be broken off easily

From older form xícara, borrowed from Classical Nahuatl xīcalli.