* "Schlick" - This word can have several meanings, depending on the context.
* In German, it can refer to mud, slime, or slurry.
* In technical contexts, it can also refer to a fine, suspended sediment in water.
* "Schleck" (German) - In German, this word means "lick". It could be a colloquialism or a mishearing of another word.
If you provide more context or the sentence where you encountered "schleck," I might be able to give you a more precise answer.