amain

Short definition from Wiktionary

Adverb

1. 1
   With all of one's might; mightily; forcefully, violently.
2. 2
   At full speed; also, in great haste.
3. 3
   Out of control.
4. 4
   Exceedingly; overmuch.

Verb

1. 1
   To lower (the sail of a ship, particularly the topsail).
2. 2
   To decrease or reduce (something).
3. 3
   To lower the topsail in token of surrender; to yield.