Oxo (??ks??) n (Cookery) trademark extract of beef in the shape of small cubes which are mixed with boiling water and used for flavouring, as stock, a drink, etc[C20: from ox + -o]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014