coath UK /kəʊθ/US /koʊθ/noun 3verb 2forms 3 noun3 •(dialect, UK) Sickness; disease; pestilence. •(dialect, UK) A disease affecting sheep or cattle. •(dialect, UK) An attack of illness, such as swooning, pangs of childbirth, etc. verb2 •To faint. •To give (sheep, cattle) the coe or rot. formscoathed · coathing · coaths