While morality standards change from culture to culture, religion to religion, family to family, and person to person, basically I guess morality could be defined following a set of standards.
the acutal definition from dictionary.com is:
morality
1. The quality of being in accord with standards of right or good conduct.
2. A system of ideas of right and wrong conduct: religious morality; Christian morality.
3. Virtuous conduct.
4. A rule or lesson in moral conduct.