a sandwich served on only one slice of bread, without a covering slice.
a slice of bread covered with a spread or filling but without a top


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  • Open scripting architecture

    (OSA) A CIL approach to the coexistence of multiple scripting systems. (1995-03-10)

  • Open-sea

    noun 1. the main body of a sea or ocean, especially the part that is outside territorial waters and not enclosed, or partially enclosed, by land. noun the middle of the sea as opposed to that abutting land

  • Open-season

    noun 1. a specific season or time of year when it is legal to catch or hunt for fish or game protected at all other times by the law. 2. a period of time in which a person or thing is exposed to criticism, attack, or recrimination: Election year is open season on all incumbents. […]

  • Open season on

    A period of unrestrained criticism or attack on something or someone, as in During an election year it’s open season on all officeholders. This expression alludes to the period during which one may legally hunt or fish. [ ; c. 1900 ]

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