Why is a "Black Hole" so called, when it appears to be the exact opposite ?

Common phrases don't have to adhere strictly to the principles of linguistics or follow the literal definitions of the words in the phrase.

Its called a black hole because:

1. no light or other radiation can escape, therefore it appears black

2. anything entering it cannot escape, so its like a hole

It is called black hole because it is actually black or devoid of light. The light that often appears around black holes are from orbiting stars nearest the black hole but out of reach of the force of extreme gravity at their event horizon. A black hole is a vortex or hole in the fabric of space that leads to inner-dimensional space beyond what man can yet detect. There is something around and within black holes. All of it is energy or of energy, visible and invisible. It is not necessarily the force of gravity that makes escape impossible for light, for light is disintegrated at or within black holes and therefore, no longer exist as light. Therefore, there is no longer any light to escape. :)

When it comes to the nature of the Universe, commonsense perspective is not always adequate.

See: Hubble directly observes the disc around a black hole

http://www.physorg.com/news/2011-11-hubble-disc-bl...

See: Planets could orbit singularities inside black holes

http://www.kurzweilai.net/planets-could-orbit-sing...

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Best regards

You said 'escape is impossible, even for light'. That would make it black.