Alack

• (interj.) An exclamation expressive of sorrow.
Found on http://thinkexist.com/dictionary/meaning/alack/

Alack

A·lack' interj. [ Prob. from ah! lack! Middle English lak loss, failure, misfortune. See Lack .] An exclamation expressive of sorrow. [ Archaic. or Poet.] Shak.
Found on http://www.encyclo.co.uk/webster/A/49

alack

expression of sorrow or regret
Found on http://phrontistery.info/a.html
No exact match found