Strong's Concordance

No	6249	Original Word	עַשְׁתֵּי
Transliteration	`ashtey	Phonetic Spelling	ash-tay'
Definitions
Apparently masculine plural construction of H6247 in the sense of an after thought; (used only in connection with H6240 in lieu of H0259) eleven or (ordinal) eleventh: + eleven (-th).