A slender supporting member of an individual part of a plant such as a flower or a leaf; also, by analogy, the shaft of a feather.
A narrow part on certain man-made objects, such as a wine glass, a tobacco pipe, a spoon.
(linguistics) The main part of an uninflected word to which affixes may be added to form inflections of the word. A stem often has a more fundamental root. Systematic conjugations and declensions derive from their stems.