I don't know the name of the part.
But I know it will come off with the locking pliers.

I murmur a prayer to the plumbing gods.
Let not this line spray water all over my bathroom.

He doesn't tell me its name, the hardware clerk.
Replace the whole thing, he says.

Four dollars and forty nine cents later
I kneel, reach beneath the porcelain.

toilet supply line--
hand tighten the nut.
The homeowner triumphant!