| Noun | 1. | Tule tree - Mexico's most famous tree; a giant specimen of Montezuma cypress more than 2,000 years old with a girth of 165 feet at Santa Maria del Tule; "some say the Tule tree is the world's largest single biomass"Mexico, United Mexican States - a republic in southern North America; became independent from Spain in 1810 Mexican swamp cypress, Montezuma cypress, Taxodium mucronatum - cypress of river valleys of Mexican highlands |