The Enbarr of Manannán, or Enbarr of the Flowing Mane, also written variously as Aenbharr, Aonbharr, Aonbárr, Énbarr, Enbhárr (Early mod. Irish: Aonḃaɼɼ Mhanannáin) was the name of the horse that Lugh Lamh-fada (Irish: Luġ Láṁḟada) had which could travel over both land and sea. In the story Aoidhe Chloinne Tuireann (The Fate of the Chirdren of Tuireann), Lugh refuses to loan it claiming that would constitute a loan of a loan, but afterwards had to concede to lending out the self-navigating currach (or coracle or boat) called the Sguaba Tuinne, or "Wave-sweeper".
The meaning of this name has variously explained as "One Mane" (O'Curry) aon "one" + barr "hair, tip (as well as mane of a horse"), "Froth" (Cormac's glossary) én "water" + barr [cacumen, spuma ], and "unique supremacy" (Mackillop's Dictionary).
The name Embarr (meaning "imagination"?) seems to have been spuriously ascribed as being Niamh's horse. A certain horse does carry Oisín and his would-be bride Niamh across sea to Tír na nÓg, according to the Laoi Oisín as ṫír na n-óg (The lay of Oisín in the land of youth) by Mícheál Coimín (1676-1760).