originate in or be caused by

many of the universities' problems stem from rapid expansion

remove the stems from (fruit or tobacco leaves)

her aunt and her mother were stemming currants on the side porch

(of a boat) make headway against (the tide or current)

if the wind will only freshen a little, we shall be able to stem the first of the flood

stop or restrict (the flow of something)

a nurse did her best to stem the bleeding

slide the tail of one ski or both skis outwards in order to turn or slow down

I side-slipped at first, grew tired of it, and stemmed for a while