thumb nailOur editors are putting together more complete content — check back in about 20 minutesthumb nailthumb nail — noun名詞1. the small, flat nail on the thumb1.名詞釋義the small, flat nail on the thumb例句She painted her thumbnail bright red.2. a small picture of a larger image2.名詞釋義a small picture of a larger image例句Click on the thumbnail to see the full photo.