Sindarin 

advir

noun. 'heirloom'

n. 'heirloom'. Q. atamir. >> mîr

Sindarin [(PE17 Sindarin Corpus) PE17:165] < ? + MĬR precious. Group: Parma Eldalamberon 17 Sindarin Corpus. Published by

advir

noun. heirloom

A noun for an “heirloom” appearing in notes from around 1959-60, where the second element is mîr “jewel, precious thing” (PE17/165). Lokyt suggested the first element might be connected to √AT(AR) “father”.

Sindarin [PE17/165] Group: Eldamo. Published by

Quenya 

atamir

noun. heirloom

A noun for an “heirloom” appearing in notes from around 1959-60, where the second element is mírë “precious thing” (PE17/165). Lokyt suggested the first element might be connected to √AT(AR) “father”. Tolkien also indicated atamir had the same meaning as Old English máþum, which was a “treasure, precious thing, gift”.