From Longman Dictionary of Contemporary Englishbedbugbed‧bug /ˈbedbʌɡ/ noun [countable] HBIan insect that sucks blood and lives in dirty houses, especially in beds
Examples from the Corpus
bedbug• She's barmy as a bedbug.• But the heat and the endlessly pestering fleas and bedbugs dragged them, again and again, back to consciousness.• I undressed and went to bed, but I was immediately bitten by bedbugs.• A large cavalry patrol moved across it stage by stage like bedbugs across a clean sheet.• Well what was to be done about the bedbugs, fleas, lice?• I lay in bed and permitted the bedbugs to bite me. 