funk hole

Noun

 * 1)  A concealed place where one can hide in safety, especially during a war; a dugout.
 * 2) * 1919, Americans Defending Democracy: Our Soldiers' Own Stories, World's War Stories Inc., p332 from the Story of the Lost Battalion:
 * Major Whittlesey came out of his funk hole, and went among the men, spreading the cheering words.