1. A backless and armless single seat supported on legs or a pedestal.
2. A low bench or support for the feet or knees in sitting or kneeling, as a footrest.
3. A toilet seat; a commode.
4. Evacuated fecal matter.
a. A stump or rootstock that produces shoots or suckers.
b. A shoot or growth from such a stump or rootstock.
intr.v. stooled, stool·ing, stools
1. Botany To send up shoots or suckers.
2. To evacuate the bowels; defecate.
3. Slang To act as a stool pigeon.
[Middle English, from Old English stōl; see stā- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.