Definition of hummingbird moth
: a hawk moth (as Hemaris thysbe) that is often active during the day, is typically tan and reddish brown or black and yellow, has wings more or less devoid of scales except for a dark border, and resembles a hummingbird in darting from flower to flower and hovering while feeding — compare bumblebee moth, hummingbird hawk-moth
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First Known Use of hummingbird moth
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