The term 'cone-shaped' can be described by two crossword solutions: 'pineal' and 'conoid'. The pineal gland, also known as the third eye, is a small endocrine gland located in the brain. It produces melatonin, which helps regulate sleep and wake cycles. The conoid is a three-dimensional geometric shape that resembles a cone. It is a surface of revolution generated by a line that is always perpendicular to a fixed plane.