posterior
— Noun
– English
~ the fleshy part of the human body that you sit on; "he deserves a good kick in the butt"; "are you going to sit on your fanny and do nothing?"
posterior horn
— Noun
– English
~ one of two roots of a spinal nerve that passes dorsally from the spinal cord and that consists of sensory fibers
posterior pituitary gland
— Noun
– English
~ the posterior lobe of the pituitary body; primarily glandular in nature