Paste of dirt, crumbs, water, and Mr. Clean resulting from insufficient sweeping before mopping. Example: Frank stepped into a big puddle of gruv where the mopwater had been dumped out. Adv: gruvly. I can't use this mop, it's all gruvly.
GRUV
Meaning of GRUV in English
Slang English vocab. Английский сленговый словарь. 2012