a hole (as in the wall of a building) made by rats
a small dirty uncomfortable room
双语例句
1. When are you going to be able to move out of that (rathole) [run-down place]?
②你什么时候能够搬出那个年久失修的破房子？
youdao
2. There are two kinds of hindrances to cohesive ores during ore drawing. One of them is stable stick arch and the other rathole flow.
溜放粘结性矿料时常会出现两类放矿障碍，一类是稳定粘结拱卡堵，另一类是形成管状流动。
youdao
3. When placed near the bit, the traditional second rathole reaming run is eliminated, wellbore conditions are improved, and casing can be run that much faster.
4. When placed near the bit, the traditional second rathole reaming run is eliminated, wellbore conditions are improved, and casing can be run that much faster.
