Aback (Adverb)
Meaning 1
Having the wind against the forward side of the sails; "the ship came up into the wind with all yards aback".
Meaning 2
By surprise; "taken aback by the caustic remarks".
Having the wind against the forward side of the sails; "the ship came up into the wind with all yards aback".
By surprise; "taken aback by the caustic remarks".