eye opener, an
A startling or shocking revelation, as in The first sentence of his speech was a real eye opener. This expression alludes to widening one's eyes with surprise. [Mid-1800s]
A strong alcoholic drink taken early in the morning, as in After a late night and little sleep, he generally needed an eye opener to jolt him awake. This usage alludes to the alleged wakening effect of such a beverage. [Early 1800s]
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
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