1.
gland
An organ or group of cells in the body that produces and secretes substances such as hormones, sweat, or saliva. Used in medical and biological contexts.
Usage
Rarely used alone; almost always appears as a suffix combined with the type of gland. Note the kanji 腺 contains the 月 radical (flesh/body) plus 泉 (spring), reflecting its meaning as a bodily source of fluids.