| Bug | |
| 1. n. (slang) A Volkswagen Beetle car. | |
| 2. n. (slang) A Bugatti car. | |
| 3. n. (colloquial, mostly, US) Any insect, arachnid, myriapod or entognath. | |
| 4. n. (entomology) An insect of the order Hemiptera (the "true bugs"). | |
| 5. n. (colloquial) Any insect, arachnid, or other terrestrial arthropod that is a pest. | |
| These flies are a bother. I’ll get some bug spray and kill them. | |
| 6. n. Any of various species of marine or freshwater crustaceans; e.g. a Morton Bay bug, mudbug. | |
| 7. n. (chiefly computing) A problem that needs fixing. | |
| The software bug led the computer to calculate 2 plus 2 as 5. | |
| 8. n. A contagious illness; a bacterium or virus causing it | |
| He’s got the flu bug. | |
| 9. n. An enthusiasm for something; an obsession | |
| I think he’s a gold bug, he has over 10,000 ounces in storage. | |
| to catch the skiing bug | |
| 10. n. A concealed electronic eavesdropping or intercept device | |
| We installed a bug in her telephone. | |
| 11. n. A small and and usually invisible file (traditionally a single-pixel image) on a World Wide Web page, primarily used to track users. | |
| He suspected the image was a Web bug used for determining who was visiting the site. | |
| 12. n. (broadcasting) A small, usually transparent or translucent image placed in a corner of a television program to indicate what network or cable channel is televising it | |
| Channel 4's bug distracted Jim from his favorite show. | |
| 13. n. (aviation) A manually positioned marker in flight instruments. | |
| 14. n. A semi-automated telegraph key. | |
| 15. n. (obsolete) Hobgoblin, scarecrow; anything that terrifies. | |
| 16. n. (chiefly LGBT, "the bug") HIV. | |
| 17. n. (poker) A limited form of wild card in some variants of poker. | |
| 18. n. (paleontology, slang) A trilobite. | |
| 19. n. (petroleum industry, slang) (synonym of oil bug) | |
| 20. n. (slang) A young apprentice jockey. | |
| 21. v. (informal, transitive) To annoy. | |
| Don’t bug me, I’m busy! | |
| 22. v. To install an electronic listening device or devices in. | |
| We need to know what’s going on. We’ll bug his house. | |
