thumbnail
n.
c.1600, from thumb, n. + nail, n.. Meaning "drawing or sketch of a small size" (though usually not literally the size of a thumbnail) is from 1852.
| 词汇 | thumbnail | 
| 词根词缀 | Online Etymology Dictionary thumbnail n. c.1600, from thumb, n. + nail, n.. Meaning "drawing or sketch of a small size" (though usually not literally the size of a thumbnail) is from 1852. | 
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