Depending on the region. In Europe, probably lard. Butter would be "mantequilla". I believe that in Latin America "manteca" can mean "butter"....
See google hits.

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Note added at 6 mins (2009-04-16 19:26:15 GMT)
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So this is a lard or butter based dough.
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Butter Biscuits Recipe
Butter Biscuits is a traditional American recipe for a classic biscuit (cookie) make from a butter-based dough leavened with baling powder. ...
www.celtnet.org.uk/recipes/miscellaneous/fetch-recipe.php?r... - 58k - Cached - Similar pages
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How can you make flaky puff pastry? Puff Pastry Recipe
The flakiness is achieved by alternating layers of water-based dough with butter-based dough. Baking creates steam pockets that separate the layers. ...
www.scientificpsychic.com/mind/puff_pastry.html - 14k - Cached - Similar pages
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Puff Pastry the Queen of French baking - Ecademy
At galor we make the most delicious Bourekas from our secret recipe of butter based dough, filled with various fillings. Order now www.galor.co.uk ...
www.ecademy.com/node.php?id=124219 - 36k - Cached - Similar pages
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Coconut Butter Thins « Something Sweet by Karen
Coconut Butter Thins have a butter based dough with macadamia nuts, coriander, coconut and lime zest. There’s a lot of texture packed inside ...
somethingsweetbykaren.wordpress.com/2009/03/31/coconut-butter-thins/ - 64k -
Results 1 - 10 of about 61 for "lard-based dough". (0.43 seconds)
Search Results

1.
123. Sweet Pastry Dough p.791 – Gourmet Project
27 Nov 2007 ... My mother is a rolling pin virtuoso whose pies always turn out perfectly, but she uses the same lard based dough for all her recipes. ...
www.gourmetproject.ca/?p=299 - 32k - Cached - Similar pages
2.
Pheasant Cornish Pasty Recipe |
The pastry is a lard based dough, that yields a flavorful, rich and flaky crust. The outer crust is pretty strong, yet the inner (softer) side of the crust ...
mattikaarts.com/blog/meat-recipes/pheasant-pasty-pheasant-juniper-berry-and-thyme/ - 42k - Cached - Similar pages
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Vegetarian dim sum? - Los Angeles Area - Chowhound
2 posts - 1 author - Last post: 14 Aug 2001
... in the gringo sense, I guess the Islamic places are pretty unlikely to use lard-based dough, or pork-based sausage either. ...
chowhound.chow.com/topics/48227 - 85k - Cached - Similar pages
4.
Need pie/tart dough recipe - Cooking Recipes Forums
If vinegar was used, she probably used a lard-based dough. I make one that. I got from "The Pastry Bible" 1 1/3 c all purpose flour ...
www.kitchencookingrecipes.com/forum/baking-forums/44561-nee... - 48k - Cached - Similar pages

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Note added at 29 mins (2009-04-16 19:49:22 GMT)
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OK. Delighted to help. This is my favorite field.
This will depend on the masa. If it is something like "hojaldre", for pasties or pastries (como empanadas, croisanes, tartas, etc.) "pastry" is the one. I would use "wet pastry" or "moist pastry" (muy húmedo, "wet", poco húmedo, "moist").
If it is bread, then use "dough". What is the name of the recipe, or at least, what is the final product going to be?
By the way, if this were to be for a cake (bizcocho, etc.), then it is a "mix", though I think that in this case it is not a cake mix, if I am not mistaken!