1. A little trout.
2. A small oblong piece of something, shaped more or less as a trout / fish (e.g., a meat trimming, bacon slice, garlic clove, poo, etc∙); 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.)