We don't have synonyms for teathe yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are teethe, teache and meathe.
(v) :
Alternative form of tath. [(UK, dialectal, agriculture, historical or archaic, Scotland) To manure (land) by pasturing cattle on it, or causing them to lie upon it.]
(n) :
Alternative form of tath. [(UK, dialectal, agriculture, historical or archaic, Scotland) The dung of livestock left on a field to serve as manure or fertiliser.]
(v) :
Alternative form of tath. [(UK, dialectal, agriculture, historical or archaic, Scotland) To manure (land) by pasturing cattle on it, or causing them to lie upon it.]
(n) :
Alternative form of tath. [(UK, dialectal, agriculture, historical or archaic, Scotland) The dung of livestock left on a field to serve as manure or fertiliser.]