Couth (k??th), imp. & p. p. of Can. [See Can, and cf. Uncouth.]
Could; was able; knew or known; understood.
[Obs.]
Above all other one Daniel
He loveth, for he couth well
Divine, that none other couth;
To him were all thing couth,
As he had it of God's grace.
Gower.
© Webster 1913.