any of several burrowing, chiefly nocturnal mammals constituting the family Dasypodidae, ranging from the southern U.S. through South America, having strong claws and a jointed protective covering of bony plates: used in certain areas for food.
Origin: 1570–80; < Sp, equiv. to armad(o) armed (< L armātus;see arm2, -ate1) + -illo < L -illus dim. suffix
ar·ma·dil·lo (är'mə-dĭl'ō) n.
pl.ar·ma·dil·los Any of several omnivorous, burrowing, edentate mammals (family Dasypodidae), native to southern North America and South America and characterized by an armorlike covering consisting of jointed bony plates.
[Spanish, diminutive of armado, armored, past participle of armar, to arm, from Latin armāre, from arma, arms; see ar- in Indo-European roots.]