[W twrch, male boar].
Magical but ferocious boar that Culhwch is required to hunt; the comb and razor lying between the ears of the beast are required to trim the hair of Ysbaddaden Bencawr. This arduous task requires the assistance of Mabon and Arthur himself. In speaking to Arthur, the boar explains that he was once a king and that he has been changed into his present shape for committing some unspecified evil. More likely is the explanation that Twrch Trwyth is yet another manifestation of the divine boar from earliest Celtic mythology; allusion to him exists also in other early texts.
See John Rhy^s, Celtic Folklore (Oxford, 1901), 509–15, 519–30, et passim;Rachel Bromwich and D. Simon Evans's annotations in Culhwch ac Olwen (Cardiff, 1992);John Carey, ‘A Tuatha Dé Miscellany’, Bulletin of the Board of Celtic Studies, 39 (1992), 41 ff.