What is the meaning of drop open?

verb

  • Open involuntarily.
    • usage: "His mouth dropped open"; "Her jaw dropped"
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). drop open. Retrieved September 20, 2026, from http://smartdefine.org/drop_open/definitions/1271508
ChicagoWordNet. 2010. "drop open" http://smartdefine.org/drop_open/definitions/1271508 (accessed September 20, 2026).
HarvardWordNet 2010, drop open, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/drop_open/definitions/1271508>.
MLAWordNet. "drop open" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/drop_open/definitions/1271508>