A‐main″ (�), adv. [Pref. a- + main. See 2d Main, n.] 1. With might; with full force; vigorously; violently; exceedingly.
They on the hill, which were not yet come to blows, perceiving the fewness of their enemies, came down amain.
Milton.
That striping giant, ill-bred and scoffing, shouts amain.
T. Parker.
2. At full speed; in great haste; also, at once. “They fled amain.” Holinshed.