Context is this question: What does drenched book mean?
I think, initially, that it was an on-topic question, to which the only reasonable on-topic answer is: no, there is no English definition of "drenched" that aids in understanding this phrase in this context.
I speculated it had some meaning to whomever originally scanned/uploaded the book (maybe indicated the software used, or the person who scanned it, or something else). Someone else speculated it indicated the book was disposed of after scanning.
But in any case, it is no longer a question about the English language.
Compare, if you will, this closed question about the phrase "two days either side of a dash". The question was fine, but the answer required knowledge of a particular story/allegory, and wasn't really about the plain English meaning of the words themselves.
Or imagine if someone posted a question asking: Someone said to me: "Luke, I am your father", but my name isn't Luke, and I have no kids. Is there some hidden meaning of the word "Luke" or "father"? This question clearly has an answer, but it isn't an answer on-topic for English.SE.