The term 'Creaked Under the Strain' is an idiom that means to be overwhelmed by a situation or task. It can be used to describe a person who is struggling to cope with a difficult situation or a machine that is being pushed beyond its limits. The crossword solution for this term is 'Groaned', which is a sound that is often associated with pain or distress. This sound can be made by a person or a machine, and it is often used to express frustration or exhaustion.