The term 'Oil Crisis' refers to a period of time in the 1970s when there was an oil shortage due to a disruption in the supply of oil. This caused a dramatic increase in the price of oil, leading to economic and political instability in many countries. The crossword solution for this term is 'ACNE, ' which stands for Arab-Israeli Conflict and Energy Crisis of 1973-1974. This conflict was a major factor in the oil crisis, as it caused a disruption in the supply of oil from the Middle East.