Don't bug me with petty details. Bug is used informally to refer to glitches or defects, especially when discussing electronics. We summarize our findings in guide pages for each order, family, genus, and species.
Take a closer look at the various types of bug that exist to discover a world of fascinating and diverse species. Look up bug or bug in wiktionary, the free dictionary. A bug is a tiny hidden microphone that transmits what people are saying.
There was a bug on the phone. Any of an order (hemiptera) of insects with sucking mouthparts and with forewings thickened toward the base, as a water bug or squash bug. The term 'bug' is often misused to represent all manner of insect (bugrefers to an insect that can only use its mouthparts to biteor suck).