Definition of portobello in English:

portobello

Syllabification: por·to·bel·lo
Pronunciation: /ˌpôrdəˈbelō
 
/
(also portobello mushroom)

noun (plural portobellos)

A large mature edible mushroom with an open flat cap.
More example sentences
  • Equally nonaggressive but more effective are roast chicken atop smothered leeks, and a meaty stack of portobellos topped by grilled radicchio and balsamic-bathed onions.
  • While I'd be happy to find more portobellos in the linguine Gorgonzola with portobello mushrooms, I love the gorgeously light Gorgonzola cream sauce.
  • Pizzas are made with fluffy dough and a selection of toppings, including red and yellow peppers, tomatoes, black olives, mozzarella and portobello and porcini mushrooms.

Origin

1990s: perhaps alteration of Italian pratarolo 'meadow mushroom'.

Definition of portobello in:

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Pronunciation: dəˈmôrəˌlīz
verb
cause (someone) to lose confidence or hope; dispirit