noun
- Marine clam having a long narrow curved thin shell.
- synonyms: razor clam, knife-handle
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). jackknife clam. Retrieved September 21, 2026, from http://smartdefine.org/jackknife_clam/definitions/1287984 |
| Chicago | WordNet. 2010. "jackknife clam" http://smartdefine.org/jackknife_clam/definitions/1287984 (accessed September 21, 2026). |
| Harvard | WordNet 2010, jackknife clam, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/jackknife_clam/definitions/1287984>. |
| MLA | WordNet. "jackknife clam" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/jackknife_clam/definitions/1287984> |