The term 'It Broke the Camel's Back' is a phrase that is used to describe a situation where one more thing added to an already difficult situation causes it to become unbearable. The crossword solution for this term is 'STRAW', which is a reference to the proverb 'the STRAW that broke the camel's back'. This proverb is used to illustrate how a seemingly small or insignificant event can be the cause of a much larger problem.