Eclair n. : A kind of frosted cake, containing flavored cream.

Example:
Is there a specific difference between a chocolate Eclair and a cream puff?

Taxonomy
éclair, pastry, Chocolate éclair recipe, free encyclopedia, chocolate, fillings, pastry bag, fondant icing, candy, dessert, custard, search, cream, dough, oblong shape, crisp, hollow inside, coffee.

Defination from the web:
éclair is a long, thin pastry made with choux pastry filled with a cream and topped with icing. ... A long john uses donut pastry and is typically filled with vanilla pudding, making it a simpler and inexpensive alternative to the éclair. ...