Definition of "copesmate"
(obsolete) An associate or companion; a friend; a partner.
Quotations
'Mis-shapen Time, copesmate of ugly Night.
1594, William Shakespeare, Lucrece (First Quarto), London: […] Richard Field, for Iohn Harrison, […]
Tie thy selfe unto that, whereto thou are subject, but tie not him; he is neither thy companion, nor thy brother, nor thy fellow Citizen, nor thy copesmate.
1603, Michel de Montaigne, chapter 12, in John Florio, transl., The Essayes […], book II, London: […] Val[entine] Simmes for Edward Blount […]