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masc. proper name, shortened from Radulf, from Old Norse Raðulfr (Old English Rædwulf), literally "wolf-counsel," from rað "counsel" (see read (n.)) + ulfr "wolf" (see wolf (n.)). The Century Dictionary also lists it as English printers' slang for "An alleged or imagined evil spirit who does mischief in a printing house."
(also Ralph or ralph up or rolf ) To vomit; barf: He ralphs up the downers and the quarts of beer
[1967+ Teenagers; probably echoic]