What is "draintile"

Usage examples of "draintile".

He'd been at Mier where they fought until the draintiles and the gutters and the spouts from the azoteas ran with blood by the gallon and he told them how the brittle old Spanish bells would explode when hit and how he sat against a wall with his shattered leg stretched out on the cobbles before him listening to a lull in the firing that grew into a strange silence and in this silence there grew a low rumbling that he took for thunder until a cannonball came around the corner trundling over the stones like a wayward bowl and went past and down the street and disappeared from sight.