Someone that cares about our beautiful home, aka Earth, and tries to do all they can to protect it. Often will recycle, use eco-friendly products, and chain themselves to trees.
Some are also vegitarian or vegans.
Not to be confused with hippies, which usually will smoke marijuana and wear lots of tie-dye.
Though some think of it as a offensive phase, many ecofreaks see nothing wrong with the term.(n.)
Anyone that gets annoyed when they can't find the recycling bin... which makes me an ecofreak