An anatomical fold is a type of structure found in the body, typically consisting of a ridge or furrow. The two crossword solutions for this term are plica and ruga. Plica is a Latin word meaning fold or pleat, and it is used to describe a fold of tissue in the body, such as the plica semilunaris in the eye. Ruga is a Latin word meaning wrinkle or fold, and it is used to describe a fold of tissue in the body, such as the rugae in the stomach.