17-letter words containing a, n, u, m, b, e
- user brain damage — (humour) (UBD) A description (usually abbreviated) used to close a trouble report obviously due to utter cluelessness on the user's part. Compare pilot error; opposite: PBD; see also brain-damaged, PEBCAK.
- welshman's button — an angler's name for a species of caddis fly, Sericostoma personatum