ETYM Old Eng. bugge, from W. bwg, bwgan, hobgoblin, scarecrow, bugbear. Related to Bogey, Boggle.
1. A fault or defect in a system or machine; SYN. glitch.
2. A small hidden microphone; for listening secretly.

ETYM Latin defectus, from deficere, defectum, to desert, fail, be wanting; de- + facere to make, do. Related to Fact, Feat, Deficit.
1. A failing or deficiency; SYN. shortcoming.
2. An imperfection in a bodily system.
3. An imperfection in a device or machine; SYN. fault, flaw.

ETYM From Fail.
1. An act that fails.
2. An event that does not accomplish its intended purpose.
3. An unexpected omission.
4. Lack of success.

Harmed or injured or spoiled.