1 عمومی:: پایین ترین قسمت، كمترین و نازلترین قیمت
شبکه مترجمین ایران
1 general:: The lowest possible level, absolute bottom, as in Wheat prices have reached rock bottom. This idiom alludes to the presence of bedrock that prevents digging farther down. [Late 1800s]
American Heritage Idioms