12-letter words containing b, m, u, s
- xylobalsamum — the dried, fragrant wood of the Balsamodendron gileadense that produces resin known as Balm of Gilead
- zebra mussel — a small striped freshwater mussel from NE Europe, Dreissena polymorpha: introduced to the Great Lakes in the 1980s and deleteriously affecting water pipes, other fauna, etc.
- zen buddhism — Zen.