phreak /fɹiːk/noun 1verb 1forms 3 noun1 •(slang, old-fashioned) A person who engages in phone phreaking.Phreaks can max-out 911 systems just by siccing a bunch of computer-modems on them in tandem, dialling them over and over until they clog. — 1992 verb1 •(slang, old-fashioned) To engage in phone phreaking. formsphreaked · phreaking · phreaks