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Related to portobellos: Yellow belly


 (pôr′tə-bĕl′ō) or por·ta·bel·la (-bĕl′ə) or por·to·bel·la (-bĕl′ə)
n. pl. por·to·bel·los or por·ta·bel·las
A mature, dark-brown form of the common cultivated mushroom (Agaricus bisporus).

[Origin unknown.]


n, pl -los
(Plants) a large flat-capped edible mushroom
References in classic literature ?
She's been at Madagascar, and at Malabar, and Surinam, and Providence, and Portobello. She was at the fishing up of the wrecked plate ships.
And heartiness aside, portobellos -- like all of their mushroom brethren -- are chock-full of nutrients.
She created a vegetarian Provencale feast with ratatouille (summer squash stew), rosemary and beaujolais grilled portobellos, endive and walnut salad, and chocolate-dipped dried fruit, including dried raspberries and starfruit.
Imagine feasting on: Jalapeno Jerk Baby Back Bibs, Jake's Barbecued Veal Brisket, Baltimore Pit Beef, Grilled Salmon with Salsa Verde, Grill-Blackened Red Fish, Pinto Bean Quesadillas with Jalapeno Cheese, Grilled Asparagus with Portobellos, Thelma's Dirty Rice, Smoke Roasted Apple Crisp, or Cinnamon Grilled Peaches.