| DU | a very small duct |
|---|---|
| DU | a very small duct |
| DU | a blood vessel in a fetus that bypasses pulmonary circulation by connecting the pulmonary artery directly to the ascending aorta |
| DU | a duct that carries spermatozoa from the epididymis to the ejaculatory duct |
| DU | an event that fails badly or is totally ineffectual |
| DU | an explosion that fails to occur |
| DU | (informal) someone who is unsuccessful |
| DU | failing to detonate |
| DU | a man who is much concerned with his dress and appearance |
| DU | a holiday resort offering ranch activities (riding and camping) |
| DU | a clay pipe with a short stem |
| DU | a feeling of intense indignation (now used only in the phrase"in high dudgeon") |