One thousandth (coll.) (4)
I believe the answer is:
thou
(Other definitions for thou that I've seen before include "1,000 (abbr)" , "You (formerly)" , "You, poetically of old" , "old address" , "Old English pronoun" .)
I believe the answer is:
thou
(Other definitions for thou that I've seen before include "1,000 (abbr)" , "You (formerly)" , "You, poetically of old" , "old address" , "Old English pronoun" .)