Or Knowledge Crossword Clue 5 2 3 4 [updated] — Useful Material

Actually, one known crossword answer for “useful material or knowledge” with pattern 5,2,3,4 is:

: In idioms, "grist to the mill" refers to anything that can be used to one's advantage or profit, particularly experiences or knowledge that can be turned into something useful. : The phrase comes from useful material or knowledge crossword clue 5 2 3 4

Best match: "SANDS OF TIME" (no).

Happy puzzling! And remember: in crosswords, knowledge is its own reward—but sometimes, it’s also the answer. Actually, one known crossword answer for “useful material

— no, that’s nonsense.