Any permanent mark to which other levels may be referred. specifically : A horizontal mark at the water's edge with reference to which the height of tides and floods may be measured.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). bench mark. Retrieved September 20, 2026, from http://smartdefine.org/bench_mark/definitions/1979479 |
| Chicago | Webster's. 2011. "bench mark" http://smartdefine.org/bench_mark/definitions/1979479 (accessed September 20, 2026). |
| Harvard | Webster's 2011, bench mark, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/bench_mark/definitions/1979479>. |
| MLA | Webster's. "bench mark" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/bench_mark/definitions/1979479> |