pibin

noun. small berry, haw

A noun appearing as G. pibin “small berry, haw” in the Gnomish Lexicon of the 1910s (GL/64), clearly a cognate to ᴱQ. pi(o)pin “fruit of hawthorns, haws” (QL/74).

Neo-Sindarin: The Early Qenya word was related to ᴱ√PINI “✱small” and there is evidence that ✱√PI(N) continued to mean “small” in Tolkien’s later writing. Therefore, I’d retain ᴺS. pibin for purposes of Neo-Sindarin, used of any small berry but more specifically the berries of hawthorns.

pibinaith(ros)

noun. hawthorn

A word for “hawthorn” in the Gnomish Lexicon of the 1910s, apparently a combination of G. pibin “small berry, haw” and a variant of G. aithos “thorn bush” (GL/64). Another word of “hawthorn” in this document was G. tadhos (GL/68).

pinaithros

noun. hawthorn

tadhos

noun. hawthorn

A noun appearing as G. tadhos “hawthorn” in the Gnomish Lexicon of the 1910s, an elaboration of G. tath (tadh-) “hedge” based on the early root ᴱ√tadh- (GL/68).

Neo-Sindarin: I would retain ᴺS. tadhos “hawthorn” based on an updated Neo-Root ᴺ√TAD “enclosure”; see that entry for details.