Term: trough: a narrow depression (as in the earth or between ocean waves or in the ocean bed)
Broader: natural depression: a sunken or depressed geological formation | Unrelated: genus coleus: genus of Old World tropical plants cultivated for their variegated leaves; various plants sometimes placed in genera Plectranthus or Solenostemon
Broader: natural depression: a sunken or depressed geological formation | Unrelated: sequel: a part added to a book or play that continues and extends it
Broader: natural depression: a sunken or depressed geological formation | Unrelated: persian cat: a long-haired breed of cat
Broader: natural depression: a sunken or depressed geological formation | Unrelated: oriental cockroach: dark brown cockroach originally from orient now nearly cosmopolitan in distribution
Broader: natural depression: a sunken or depressed geological formation | Unrelated: tremolo: (music) a tremulous effect produced by rapid repetition of a single tone or rapid alternation of two tones
Broader: natural depression: a sunken or depressed geological formation | Unrelated: baltic: a branch of the Indo-European family of languages related to the Slavonic languages; Baltic languages have preserved many archaic features that are believed to have existed in Proto-Indo European
Broader: natural depression: a sunken or depressed geological formation | Unrelated: lignin: a complex polymer; the chief constituent of wood other than carbohydrates; binds to cellulose fibers to harden and strengthen cell walls of plants
Broader: natural depression: a sunken or depressed geological formation | Unrelated: genus thiobacillus: a genus of bacteria
Broader: natural depression: a sunken or depressed geological formation | Unrelated: baked potato: potato that has been cooked by baking it in an oven
Broader: natural depression: a sunken or depressed geological formation | Unrelated: blackcock: male black grouse