1. in man, the part of the body from the neck to the bottom of the spine. 2. in animals, the upper part of the body. of or at the back. the back door. 1. to, or at, the place or person from which a person or thing came.
secrete definition: Secrete is defined as to hide, or to produce and release a liquid. (verb) An example of secrete is to put the house key in a secret location. An example of secrete is for the body to produce sweat. ...
organs or gland that secrete regulatory substances directly into the circulation and not through a duct. Examples are pituitary, thyroid, parathyroid, adrenal glands, ovary and testis, placenta and beta cells of pancreas. Any of the glands of the endocrine system that secrete hormones directly into the bloodstream.Tissues specialised in the production of hormones which can be secreted into the bloodstream.