Meaning

originBorrowed from Scots jaup (“(noun) dash or splash of mud, water, etc.; broken piece, fragment; light blow, slap; (verb) of water: to dash; to splash; to cause a splash by striking the surface of or throwing water; to bespatter or splash (mud, water, etc.); (obsolete) to knock about, manhandle”), perhaps from jalp, jilp (“to spill, splash, squirt”), probably originally imitative of a splash.

Etymology from Wiktionary, CC BY-SA 3.0