Correct spelling for the English word "tacahout" is [tˈakɐhˌa͡ʊt], [tˈakɐhˌaʊt], [t_ˈa_k_ɐ_h_ˌaʊ_t] (IPA phonetic alphabet).
A gall formed on the Indian tamarisk, furnishing tannic acid.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.