Middle English corsour, corser, borrowed from Anglo-French curser, courcer, from cours, curs "run, race, course entry 1" (continental Old French, "rapid pace") + -er -er entry 2
course entry 2 + -er entry 2
14th century, in the meaning defined above
1600, in the meaning defined at sense 1
“Courser.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/courser. Accessed 4 Dec. 2022.
Thesaurus: All synonyms and antonyms for courser
Britannica.com: Encyclopedia article about courser
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