FROM STRONG’S HEBREW DICTIONARY (1890)

Strong’s Hebrew Dictionary (1890) — public domain, printed whole.

'Achashverowsh akh-ash-vay-rosh' — or (shortened) pAchashrosh {akh- ash-rosh'} (Esth. 10:1); of Persian origin; Achashverosh (i.e. Ahasuerus or Artaxerxes, but in this case Xerxes), the title (rather than name) of a Persian king:--Ahasuerus.