WordReference Random House Learner's Dictionary of American English © 2025
la•dy•bug /ˈleɪdiˌbʌg/USA pronunciation  
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2025- Insectsa small, round, often brightly colored and spotted beetle feeding chiefly on small insects and also on plants.
 
la•dy•bug 
(lā′dē bug′),USA pronunciation n. 
            - Insectsany of numerous small, round, often brightly colored and spotted beetles of the family Coccinellidae, feeding chiefly on aphids and other small insects, but including several forms that feed on plants. Also called ladybeetle, lady beetle, ladybird beetle, ladybird.
 
- lady + bug1 1690–1700
 
'ladybug' also found in these entries (note: many are not synonyms or translations):