WordNet sense 1 (informal terms for a difficult situation):

fix, jam, mess, muddle, pickle, kettle of fish

WordNet sense 2 (a depression hollowed out of solid matter):

hollow

WordNet sense 3 (informal terms for the mouth):

gob, maw, trap, yap, cakehole

WordNet sense 4 (one playing period (from tee to green) on a golf course):

golf hole

WordNet sense 5 (hit the ball into the hole):

hole out