地窖 (dìjiào) means "cellar" or "underground storage room," an underground space used for storing food, wine, or other goods. It is composed of 地 (ground) and 窖 (pit/cellar). Cellars are traditionally used to keep vegetables and fruits fresh in cool conditions.
奶奶把冬天吃的白菜都放在地窖里了。
Nǎinai bǎ dōngtiān chī de báicài dōu fàng zài dìjiào lǐ le.
Grandma put all the cabbage for winter in the cellar.
这个地窖里存着几百瓶红酒。
Zhège dìjiào lǐ cún zhe jǐ bǎi píng hóngjiǔ.
This cellar stores several hundred bottles of red wine.
农村的老房子一般都有一个地窖。
Nóngcūn de lǎo fángzi yībān dōu yǒu yī gè dìjiào.
Old houses in the countryside generally all have a cellar.