1. (adj.) placing emphasis on other people's emotions and feelings so as not to cause offense. See also PC
2. Intentionally limiting what could be freely stated to prevent sociopolitical accusations of bigotry.
3. An attempt to justify limitations on free speech
by citing perceived offenses to others sensibilities, even if the "others" are not the people the comment was directed at.
4. Taking a position which is politically beneficial in the short term or to prevent accusations of misconduct.