Moscardini are definitely baby octopus, and a delicacy in Liguria, one I am very happy to say I have had.

Rosticciare is an older term for roasting, as per this older cookbook I found on google.

http://books.google.com/books?id=dXoEAAAAQAAJ&pg=RA1-PA338&l...

I found this:
http://dizionari.corriere.it/dizionario_inglese/Italiano/M/m...

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Note added at 10 min (2009-07-24 16:42:21 GMT)
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But probably it's too scientific for what you need.

Roasted curled octopus

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Note added at 16 mins (2009-07-24 16:47:31 GMT)
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Hotel Europa : Roasted curled octopus on a raw corn cream and Salina's capers. Involtini di branzino gratinato al forno su julienne di verdurine brasate ...
www.europa-hotel.net/.../gallery.php?...

was thinking spit-roasted, but in view of e.g. this scampi recipe think tossed may be better

Sgusciate gli scampi, metteteli a cuocere in una padella antiaderente per circa 5 minuti, aggiungendo un pizzico di sale. Prendete gli scampi e adagiateli sulle verdure precedentemente preparate. Mettete in un pentolino il fegato grasso d’oca, scioglietelo a vapore con un filo d’olio, emulsionate, dopodichè versate sugli scampi e servite.

http://gustos.yssimo.com/index.php/antipasti/scampi-rosticci...

Olea in the Pearl – 6.28.05 | An Exploration of Portland Food and ...
Spit roasted octopus salad, marinated borlotti beans, citrus vinaigrette. Steamed cockles, harissa, basil, garlic, olives. Crispy cod brandade, basil mayo, ...
www.portlandfoodanddrink.com/2005/.../olea-in-the-pearl-2/ -

[PDF]
Appetizers, Soup, Salads & Ceviche Burguers, Burritos, Quesadillas ...
File Format: PDF/Adobe Acrobat - View
Spaghetti & lobster in basil pesto. 28. Shrimp Rice. Veggie & rice medley with tossed shrimp. 20. Octopus Rice. Veggie & rice medley with tossed octopus. ...
www.hotelpuntaislita.com/file_download/32

Last but not least, the Musk Octopus (Eledone moschata) is a smaller octopus with a single row of suckers on its tentacles (the others have two) and issues forth a strong odor of musk. Tunisians capture it by hand under stones and among seaweed; they call it meska and regard it as the tastiest member of the octopus family.

http://slowfooduk.org/sloweb/eng/dettaglio.lasso?cod=SW_0050...

Articles (Fivestars Zagreb - Only Recommended)
... which can be served as brodetto, or can be grilled or boiled; Fish soups, octopus, cuttle-fish or musk-octopus salads; Grilled squid from the Adriatic ...
www.fivestars.hr/articles/view/2/

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Note added at 4 hrs (2009-07-24 21:06:10 GMT)
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#
The Friendly Orca Restaurant - waterfront dining Gold Coast
warm wok tossed octopus salad $9.90 fettuccini, onion, garlic, mushrooms, wine & cream $9.90 thai green chicken curry & steamed rice $11.90 ...
www.goldcoastdiningguide.com.au/.../friendlyorca.php - Cached - Similar
#
foodvenue.com - Recent Reviews
Crustacea Marine Cuisine · nishiki, 3/5/2001, I strongly recommend the tapas, Wok Tossed Octopus, cost approx RM12-50 (large). It's similar to the little ...
www.foodvenue.com/recent_review.asp?page=26...3

otherwise, if not tossed in a pan, I'd say grilled - more context might help

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Note added at 1 day16 hrs (2009-07-26 09:03:27 GMT)
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N.B. These are patate rosticciate:

...Sbucciare le patate e tagliarle a dadini, rosticciarle in una padella antiaderente con un filo di olio, sale e pepe fino a quando non sararnno belle dorate. Servire in un piatto...

http://www.roccoeisuoifornelli.it/2008/09/14/cuore-di-vitell...

and:
Capesante Rosticciate in Padella con Colino di Pomodori ed Olio al Basilico 14
Seared scallops served with cherry tomatoes coulis and basil oil


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Note added at 1 day16 hrs (2009-07-26 09:13:28 GMT)
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It could be that they're cooked on a griddle rather than tossed/sauteed in a pan - but we don't have enough context - the sentence/whole phrase is needed really; definitely not stewed, though, as this involves liquid