A surname from Vietnamese.

present participle of tan

The process of making leather, which does not easily decompose, from the skins of animals, which do. / The acquisition of a tan, either by exposure to the sun, or artificially. / (informal) A spanking.

(engineering) Initialism of total acid number, the measure of a lubricant's or crude oil's acidity. / (banking) Initialism of transaction authentication number, in electronic banking.

Having a suntan. / (of leather) Finished, made using tannic acid (as opposed to abrasion).

simple past tense and past participle of tan

plural of tan

Third-person singular simple present indicative form of tan

(Ireland, Britain) The Black and Tans, a British irregular army group operating against Irish republicans in the War of Independence 1920/21.

plural of tanning