mabinos

noun. plane tree

A word in the Gnomish Lexicon of the 1910s glossed “plane tree” [perhaps Genus Platanus], apparently an elaboration of the plural mabin of G. mô/mab “hand” (GL/55). Tolkien said it was “usually + aj. fathwed [tasselled]”, presumably ✱mabinos fathwed “tasseled plane tree”. He also said that m. gwilbriniol, presumably G. ✱mabinos gwilbriniol, was another word for “sycamore” and was equivalent to G. mavlantos.

mabinos gwilbriniol

noun. sycamore

blantos

noun. sycamore

A word for “sycamore” in the Gnomish Lexicon of the 1910s, apparently a noun form of G. blant “flat”, likely referring to its leaves and possibly a reduced form of G. mavlantos of the same meaning (GL/23).

mavlantos

noun. sycamore

A word appearing as G. mavlantos “sycamore” in the Gnomish Lexicon of the 1910s, apparently a blending of G. mavlant “palm” and G. blantos “sycamore” (GL/23, 55). This word likely refers to the sycamore’s flat and palm-like leaves.

Neo-Sindarin: For purposes of Neo-Sindarin I would adapt this word as ᴺS. mablanthos, a noun formation based on mâb and [ᴺS.] plant “flat”.