Ladybird n. : Any one of numerous species of small beetles of the genus Coccinella and allied genera (family Coccinellidae); -- called also ladybug, ladyclock, lady cow, lady fly, and lady beetle. Coccinella seplempunctata in one of the common European species. See Coccinella.

Example:
What is the role of the Ladybird bug/ladybug in nature?

Taxonomy
ladybird, Coccinellids, ladybugs, insects, North America, species, larvae, prey, fertile eggs, Harmonia axyridis, fly, bug, lady beetles, lady, predators, free encyclopedia, list of Coccinellidae genera, cow.

Defination from the web:
ladybird flies into one's bedroom, it is considered good luck. ... U.S. President Lyndon Baynes Johnson's wife was universally known by her nickname, "Lady Bird" Johnson. ...