0 past simple and past participle of plumb --
1 to supply a building or a device with water pipes, or to connect a building or a device to a water pipe: --
Have you plumbed the dishwasher in yet?
We've discovered that our house isn't plumbed properly.
2 to measure how deep something is, especially water --
To my knowledge, no qualified surveyor has ever plumbed the depth of knowledge of rent officers, many of them being not qualified.
I did not realize then what further depths there were to be plumbed.
It is so deep as hardly to be plumbed, and so wide as hardly to be bridged.
The experiences that led up to the decision to run away from home will constitute depths which will not easily be plumbed.
The debate about asylum seekers has plumbed appalling depths in recent times.
Most caravans these days have plumbed-in water: their residents no longer go to a standpipe in the middle of the field.
It comprises five rooms, each with its own en-suite shower, and one room with a plumbed-in birthing pool.
It is larger; it has been "plumbed" into the house system; and it is very successful.
