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| a scrap or morsel of food left at a meal. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| contact lens | |
| —n | |
| a thin convex lens, usually of plastic, which floats on the layer of tears in front of the cornea to correct defects of vision | |
contact lens n.
A thin plastic or glass lens that is fitted over the cornea of the eye to correct various vision defects.