a secondary entry refers to additional information that is not the primary source but still relevant.

द्वितीयक प्रविष्टि

English Usage: The archive included a secondary entry that provided context for the main document.

Hindi Usage: संग्रह में एक द्वितीयक प्रविष्टि शामिल थी जिसने मुख्य दस्तावेज़ के लिए संदर्भ प्रदान किया।