THOROUGH, adjective thur'ro. 1. Literally, passing through or to the end; hence, complete; perfect; as a thorough reformation; thorough work; a thorough translator; a thorough poet. 2. Passing through; as thorough lights in a house. THOROUGH, preposition thur'ro. From side to side, or from end to end. 1. By means of. [Not now used.] [See Through.] THOROUGH, noun thur'ro. An inter-furrow between two ridges.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI