A monkey tail is the tail visible on some monkeys. Monkey tail may also refer to: At sign, the symbol "@" also known as a monkey tail or apetail Monkey tail plant, the plant Heliotropium curassavicum Monkey tail tree, the tree Araucaria araucana Monkey's tail, a Chilean drink, Cola de mono Monkey's tail, a stopper knot for ropes See also Monkey fist, a type of knot