Etymology: Origin uncertain. Apparently related to the following, although the direction of any borrowing is unclear: West Frisian pomp pump, water pipe, sewer, Middle Dutch pompe culvert, pipe (1463; Dutch regional (chiefly northern) pomp ), early modern Dutch pompe , pomp ship's pump, in later use also any kind of pump (1530; Dutch pomp pump), pump well or sink of a ship (1573), Middle Low German pumpe , pompe ship's pump, pump, wooden water pipe (15th cent.; German regional (Low German) Pumpe pump, (East Friesland) pipe of wood or metal; > German Pumpe , †Pompe pump (16th cent.), Old Swedish pump (a1524; Swedish pump ), Danish pumpe , †pompe ); compare also Middle French, French pompe pump (1440; probably < Middle Dutch, although this is apparently first attested later), Italian pompa (1525; < French). Perhaps ultimately of imitative origin. Perhaps compare Middle Low German pumpen to beat, to drive (fish) by beating on water, early modern German pumpen to bump, to knock, to thud (German regional pumpen ). Compare also plump n.² and the German regional (Low German) parallel cited at that entry. The semantic development of the word is unclear. It has been suggested that the sense ‘water pipe’ (see sense 3) is the original sense. This matches the chronology of attestation in Dutch but does not explain the early attestation of the sense ‘mechanical device for raising water’ in English and French. It has also been suggested that the sense ‘mechanical device for raising water’ first arose in nautical language, and furthermore that in this sense the word is borrowed from or influenced by Catalan bomba (1653), Spanish bomba (1495), Portuguese bomba (1532 or earlier), all apparently partly of imitative origin, and partly < classical Latin bombus (see bombus n. and compare bomb n.). All of these are, however, apparently first attested later. In sense 3 perhaps after Dutch regional pomp (see above). In senses 5 and 6 after pump v. With pump-maker n. at Compounds 1d compare Middle Low German pompemaker, Old Swedish pumpomakare.

Etymology: Origin unknown.Perhaps compare pomp n.¹ (although any connection seems improbable with German Pumphose light baggy trousers, pantaloons (end of 16th cent.), probably < Middle Low German pomp pomp n.¹ + German Hose hose n.). Alternatively, perhaps compare pump n.¹ (perhaps compare earlier pump shoe n.¹, although the semantic connection with the name of a part of a pump is not clear; perhaps originally an allusion to the tight fit of the piston of a pump). N.E.D. (1909) also raises the possibility of imitative origin: ‘suggested by the dull flapping sound made by slippers, as distinct from the stamp of heavy shoes’. German Pumps (singular) court shoe (early 20th cent.) is < English.

Etymology: < pump n.¹ Compare Middle French pomper (1558; French pomper), early modern Dutch pompen (a1556; Dutch pompen), Middle Low German pumpen, pompen, German pumpen (16th cent.), Old Swedish pumpa, pompa (Swedish pumpa).In sense 13c probably after pumphandle v.