| Main Entry: | Area 51 |
| Part of Speech: | n |
| Definition: | a US Air Force base in southern Nevada, rumored to be where the US government hides alien visitors |
| Example: | The intense secrecy surrounding Area 51, the very existence of which the US Government barely acknowledges, has led it to become the frequent subject of conspiracy theories and UFO folklore. |
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| a scrap or morsel of food left at a meal. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |