Wikipedia combined definition:
Feminism is a collection of movements aimed at defining, establishing, and defending equal political, economic, and social rights and equal opportunities for women.

It is those last two words that are important, and that make the concept different from a philosophy that wishes to remove all gender inequalities.

The fight for equality for women is still an important one, as women often suffer from poor opportunities and rights in our society. But it should be a fight for equality for all genders. If this is what people mean when they talk about feminism then they should recognise that the term is loaded to imply that it is always rights for women is always most important - just like spaceman implies that women can't go into space. Gender neutral language is part of the solution and something that feminists have fought for but I would have thought it was obvious that it should work both ways.