The term 'Damocles Sword of' refers to a metaphor for an impending danger. The crossword solutions for this term are PERIL (5 letters), SABRE (5 letters), and EPEE (4 letters). PERIL is a state of danger or risk, while a SABRE is a type of sword with a curved blade and a metal guard. An epee is a type of fencing sword with a triangular blade and a large bell guard. Together, these words represent the idea of a looming danger, as described by the metaphor of the Damocles Sword of.