Name of an Ent, translated “Quickbeam” in The Lord of the Rings (LotR/482), but elsewhere said to more literally mean “Quick (Lively) Tree” (PE17/82, RC/762). His name is most likely a combination of bregol “sudden” and galadh “tree”, probably influenced by Nan. galad (assuming the name is not itself Nandorin).
Conceptual Development: His name already N. Bregalad when it first appeared in Lord of the Rings drafts from the 1940s, with the same meaning (TI/419, WR/26).
prop. n. Bot. 'quick (lively) tree', Quickbeam. Tolkien notes that "_Quicken _or Quickbeam are actual names of 'rowan' or 'mountain-ash' = German Vogelbeere, Vogelbeerbaum.