Stem Stem Snakeboard In common parlance, a stem is any elongated, usually narrow, extension or supporting structure of an object. Examples are the stem of a Smoking pipe, stem of a cut Flower, stem of a wine Glass, etc.. Uses of the term specific to certain fields are as follow:

In Botany, a Plant stem is the above ground axis of a Vascular plant.
On a Bicycle, the stem connects the fork to the handlebars.
In Linguistics, a stem (linguistics) is the base part of the word including derivational affixes but not inflectional morphemes, i. e. the part of the word that remains unchanged through Inflection.
In Music, a Stem (music) is part of the annotation used to write musical notes.
In rock climbing, a stem is a move that involves two widely spaced holds.
In Shipbuilding a stem is the upright structural member or post at the bow, which is attached to the foremost part of a vessel's keel.
In Typography, a stem is the upright element of a letter or character. The letter 'i' has one stem, 'n' has two stems, and 'm' has three.