What does almighty mean?
The definition of almighty
Al*might”y, a.
Etym: [AS. ealmihtig, ælmihtig; eal (OE. al) ail + mihtig mighty.]

1 Unlimited in might; omnipotent; all-powerful; irresistible. I am the Almighty God. Gen. xvii. 1.
2 Great; extreme; terrible. [Slang] Poor Aroar can not live, and can not die, — so that he is in an almighty fix. De Quincey. The Almighty, the omnipotent God. Rev. i. 8.