1gunk 
/ˈgʌŋk/ noun
/ˈgʌŋk/ noun [noncount] chiefly US, informal : material that is dirty, sticky, or greasy
▪ The engine was all full of gunk. ▪ I need to wipe this gunk off my hands.
▪ The engine was all full of gunk. ▪ I need to wipe this gunk off my hands.
— gunky /ˈgʌŋki/ adjective, gunk·i·er; gunk·i·est
▪ Your hands are all gunky! ▪ a gunky residue
/ˈgʌŋki/ adjective, gunk·i·er; gunk·i·est ▪ Your hands are all gunky! ▪ a gunky residue
