18-letter words containing b, i, m, a, n, u
- submaxillary gland — submandibular gland.
- subsidiary company — a company whose controlling interest is owned by another company.
- subsistence farmer — a farmer who consumes most of the produce he grows, leaving little or nothing to be marketed
- the black mountain — a mountain range in S Wales, in E Carmarthenshire and W Powys. Highest peak: Carmarthen Van, 802 m (2632 ft)
- transfinite number — an infinite cardinal or ordinal number.
- urban homesteading — homesteading (def 2).
- white man's burden — the alleged duty of white colonizers to care for nonwhite indigenous subjects in their colonial possessions.
- widemouth blindcat — any of several catfishes, as Satan eurystomus (widemouth blindcat) of Texas, that inhabit underground streams and have undeveloped eyes and unpigmented skin.