n. pl. sham·poos
1. Any of various liquid or cream preparations of soap or detergent used to wash the hair and scalp.
2. Any of various cleaning agents for rugs, upholstery, or cars.
3. The act or process of washing or cleaning with shampoo.
tr. & intr.v. sham·pooed, sham·poo·ing, sham·poos
To wash or undergo washing with shampoo.
[From Hindi cāṁpō, imperative of cāṁpnā, to press, knead, shampoo; akin to Prakrit caṃpaï akin to cappaï, he presses; see CHAPATI.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.