An insect or other creeping or crawling invertebrate. The garden was full of bugs, including beetles and ants.
A fault or error in a computer program or system. The software developer spent hours trying to fix the bug in the code.
A small hidden microphone used for surveillance. The detective found a bug hidden under the table, recording their conversation.
An enthusiasm or obsession for something. She caught the travel bug after her first trip to Europe.
A contagious illness, especially a minor one. He caught a stomach bug and had to stay home from work.