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Portable, hand operated, for water
A stirrup pump is a portable reciprocating water pump used to extinguish or control small fires. It is operated by hand. The operator places a foot on a stirrup-like bracket at the bottom of the pump to hold the pump steady, the bottom of the suction cylinder is placed inside a bucket of water.
References
Feuerwehr-Dienstvorschrift 1 (FwDV 1) − Grundtätigkeiten − Lösch- und Hilfeleistungseinsatz. Ausschuss Feuerwehrangelegenheiten, Katastrophenschutz und zivile Verteidigung (AFKzV), Bremen 2006, S. 53.