(1) There's a bunch of gunk clogging the drain.

(2) If you were expecting the graceful and chaste fluidity of Swan Lake, you would surely have got the right gunk.

(3) There was greasy gunk on his lips and his mouth was full of rancid sourness.

(4) The rest of us are up to our elbows in the gunk, digging out the recyclables.

(5) Donna has been going out with a real gink.