Dictionary.com
definitions

tatpurusha

[tat-poo r-uh-shuh, tuht-]
noun Linguistics.
  1. a compound of two words in which the first is an attributive noun and the second a substantive, as bookcase, aircraft, or flowerpot.

Origin of tatpurusha

< Sanskrit tatpuruṣa literally, his man, his servant; equivalent to the two words tasya + puruṣaḥ; an example of the compound used to name the compound type
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018