Meaning of BUG in English

BUG

(INSECT) [noun] [C] [informal] - a very small insect such as a bedbugShe's allergic to the bugs that live in cats' fur.To be bug-eyed or to have bug eyes is to have eyes that stick out.He stared at her in bug-eyed surprise.

Cambridge English vocab.      Кембриджский английский словарь.