Definition of "Bug"

Bug¹

proper noun
1. A river flowing northwest 450 miles between Belarus and Poland.
2. A river in Ukraine (Southern Bug), flowing 530 miles to the Dnieper estuary.

Bug²

noun
plural Bugs
1. (US, slang) A Volkswagen Beetle car.

Bug³

noun
plural Bugs
1. (slang) A Bugatti car.