1. The pointed striking tip of an arrow, typically a knapped, wedge-shaped stone or a fitted metal cap.
2. Something, such as a directional mark on a sign or drawing, having the shape of an arrowhead.
a. Any of various aquatic or wetland perennial plants of the genus Sagittaria, having arrowhead-shaped leaves and panicles of white, unisexual flowers.
b. The edible tubers of various Sagittaria species, especially S. sagittifolia of Eurasia or S. latifolia of North America.
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.