樹窿

Noun

 * 1)  tree hollow
 * 2)  someone who listens to one's problems and keeps them secret; confidant; a shoulder to cry on
 * 1)  someone who listens to one's problems and keeps them secret; confidant; a shoulder to cry on
 * 1)  someone who listens to one's problems and keeps them secret; confidant; a shoulder to cry on