The answer is DONORS
The corresponding square is hotel puzzle
   by Brian Tivol

This hotel is named after "Motel 6" because there are six answers
involved and that's all the hint you should need.

All of the answers in this set overlap by a few letters and form a
natural chain.  The overlapping isn't solid, though; instead, it
leaves unshared letter in each word.  These letters in order spell the
answer, and the only tricky part is figuring out where in the circle
to start.

  UNDER
    |ERODE
    |  |DENALI
    |  |  |ALIOTH
    |  |  |   |THRONE
    |  |  |   |  |ONESUN
    |  |  |   |  |   |UNDER
    |  |  |   |  |   |   ERODE
    |  |  |   |  |   |      ...
    D  O  N   O  R   S