The term 'Quakers in the Woods' refers to a group of Quakers who settled in the woods of Pennsylvania in the late 1600s. The crossword solution for this term is 'Aspens, ' which is a type of tree that is native to North America and is commonly found in the woods of Pennsylvania. Aspens are known for their white bark and tall, slender trunks, and they are often used as a symbol of peace and tranquility.