The Tocharian B word spaitu
Word spaitu
s p ai t u
IPA spɐitu
Meaning dust
Synonyms tweye, taur, āre

Comments
Douglas Q. Adams, “Etymological Dictionary of Tocharian B”, 1999, Brill

Other words that might be of interest
stām ‘tree’, wartto ‘forest’, karāś ‘forest’, kärweñe ‘stone’, warañc ‘sand’, keṃ ‘earth’, ṣale ‘mountain’, tsrerme ‘ditch’, murye ‘ditch, irrigation’, kenätstse ‘earthly’, dvīp ‘island’, prenke ‘island’, ṣpel ‘mud’, warañce ‘sand’, or ‘wood’