Still fettling water butts. A while back when it was still raining now and then I connected up a third water butt to the array behind the house. I sited it too low, so I can't a watering can under the tap!
Searching through history, I found a shallow bucket which I have always known as a plasterer's bucket. Shallow so it is easy to get a float or trowel in.
Prior to locating said bucket I had searched on line. Apparently it is not a plasterer's bucket which is deep, but just a shallow bucket.
Names change over time, I suppose.
Ah, well.
Dave R