From en.wiktionary.org:
** English
*** Alternative forms
- three-square
*** Etymology
From [en], referring to a cross-section of the plant's stem appearing as an
equilateral triangle.
*** Pronunciation
- [en]
*** Noun
[-] [Schoenoplectus]
1. Several species of bulrush (biologically, sedge s) with a triangular stem:
1. [Schoenoplectus americanus] ( American threesquare , Olney's bulrush , chairmaker's bulrush ).
2. * {{ quote-book | en | date=2018-03-14 | author=Bryan MacKay | title=Paddle Maryland: A Guide to Rivers, Creeks, and Water Trails | publisher=JHU Press | isbn=9781421425023 | page=38
|text=In colonial days, THREESQUARE was used to cane chair seats.}}
1. [Schoenoplectus pungens] ( common threesquare , sharp club-rush )
**** Translations
[_Schoenoplectus americanus_]
- Polish: [pl]
- Translingual: [mul]
[trans-bottom] [_Schoenoplectus pungens_]
- Czech: [cs]
- Dutch: [nl]
- French: [fr]
- German: [de] , [de]
- Sorbian:
- Translingual: [mul]
- Ukrainian: [uk]
- Welsh: [cy]
[trans-bottom]
[en]