6-letter words containing o, b, t, r
- rubout — a murder or assassination.
- sorbet — sherbet (defs 1, 3).
- strabo — 63? b.c.–a.d. 21? Greek geographer and historian.
- strobe — Also called strobe light. stroboscope (def 2a).
- stromb — a shellfish similar to a whelk
- tabora — a city in NW Tanzania.
- tabour — a small drum formerly used to accompany oneself on a pipe or fife.
- tarboy — a boy who applies tar to the skin of sheep cut during shearing
- tobira — a shrub, Pittosporum tobira, of China and Japan, having leathery leaves, fragrant, greenish-white flower clusters, densely hairy fruit, and lemon-scented foliage.
- tobruk — a small port in NE Libya, in E Cyrenaica on the Mediterranean coast road: scene of severe fighting in World War II: taken from the Italians by the British in Jan 1941, from the British by the Germans in June 1942, and finally taken by the British in Nov 1942
- torbay — a borough in S Devonshire, in SW England: seaside resort.
- towbar — a metal bar for attaching a vehicle to a load to be towed.
- tribo- — indicating friction
- trumbo — Dalton, 1905–76, U.S. novelist and screenwriter.
- tuebor — I will defend: motto on the coat of arms of Michigan.
- turbo- — of, relating to, or driven by a turbine
- turbot — a European flatfish, Psetta maxima, having a diamond-shaped body: valued as a food fish.
- warbot — any robot or unmanned vehicle or device designed for and used in warfare