OED

OED stands for the Oxford English Dictionary, a comprehensive reference that documents the history, meanings, and usage of the English language. It provides detailed information about words, including their origins, how they've evolved over time, and different contexts in which they are used. Considered one of the most authoritative sources on English vocabulary, the OED offers thorough, well-researched entries that help readers, writers, and scholars understand the full richness and development of the language.