An oblong piece of something, shaped as a trout / fish; slice; strip.
—The most enviable troutstrip in the whole town!— Grandma enthused instead of answering, stuffing a flat fillet of dark carmine uncooked meat into the metallic throat's wide mouth.
—Raw fish?— Dad focused his eyes.
—Any clippings or elongate meat trimmings are "troutstrip", "trout", or "troutie" in Estela's parlance.— the Doctor explained. (Context: Grandma Estela is putting a piece of fresh meat into a grinder; Dr∙ Barton explains her archaic language to their guests watching the scene. Source: J∙ Okram - The Mystery of the Rammed Key.)