Enter a clue or pattern or both:
The Clue
Crankcase sediment (6 letter answer)
The Answer
SLUDGE
Tags
Notes
The answer SLUDGE is rarely seen, appearing only about once every 1600 puzzles.
Related Clues
Gunk
Mire
Muck
Ooze
Drain blocker
Dredge uptake
STP target
Definition
SLUDGE as a noun:
1. the precipitate produced by sewage treatment
2. (sludge, slime, goo, gook, guck, gunk, muck, ooze) = any thick messy substance