Wiktionary
long profile
n. A curve showing the vertical profile of a river from its head to mouth
Usage examples of "long profile".
There was a rustling from the hedge, and I poised to shriek: but it was Nef's long profile that came around the corner.
They'd been able to see her long profile, from the end of her bowsprit to her taffrail, as she'd swung across the channel--but now it was shortening as she turned towards the Triton.
They'd been able to see her long profile, from the end of her bowsprit to her taffrail, as she'd swung across the channel—.