Definition of: moth

(môth, moth) noun plural moths (môthz, môths, mothz, moths)
Any of various typically nocturnal, lepidopterous insects (division Heterocera), distinguished from butterflies by their stout bodies and smaller, usually dull–colored wings, which fold laterally across the abdomen. The larvae of the gipsy moth, silkworm, etc., feed on plants; those of the clothes moth (family Tineidae) feed on textiles, clothing, and furs. [OE moththe]