18-letter words containing c, o, b, a, i, l
- scottish blackface — a common breed of hardy mountain sheep having horns and a black face, kept chiefly on the mainland of Scotland
- selective abortion — the aborting of particular embryos for medical or social reasons
- significant symbol — a verbal or nonverbal gesture, as a word or smile, that has acquired a conventionalized meaning.
- slobodan milosevic — Slobodan [sloh-buh-dain] /ˈsloʊ bəˌdɛən/ (Show IPA), 1941–2006, Yugoslav and Serbian politician: president of Serbia 1989–97, president of the Federal Republic of Yugoslavia 1997–2000, accused of war crimes 2001.
- social bookmarking — the practice of saving bookmarked Web pages to a public website as a way to share the links with other Internet users: Social bookmarking is a tool that allows you to add tags and comments to your bookmarks.
- stationary bicycle — an exercise bike
- sub-classification — to arrange in subclasses.
- subatomic particle — physics:
- subordinate clause — a clause that modifies the principal clause or some part of it or that serves a noun function in the principal clause, as when she arrived in the sentence I was there when she arrived or that she has arrived in the sentence I doubt that she has arrived.
- tectorial membrane — membrane in the inner ear that covers the organ of Corti
- television cabinet — a cabinet on which a television set is placed or in which it is encased
- the black mountain — a mountain range in S Wales, in E Carmarthenshire and W Powys. Highest peak: Carmarthen Van, 802 m (2632 ft)
- tick all the boxes — to satisfy all of the apparent requirements for success
- widemouth blindcat — any of several catfishes, as Satan eurystomus (widemouth blindcat) of Texas, that inhabit underground streams and have undeveloped eyes and unpigmented skin.