Going out for tapas (ir de tapas) is a typical Spanish habit, comparable with the happy hour consumed in the afternoon, from approximately 18:30 to 20:30 pm, before having dinner; or with brunch, from approximately 10:30 to 12:30 a.m.
Tapas are prepared with local ingredients; in the center of Spain there is a great consumption of meat, for this reason there is meat in many Tapas; in the north and in the south they eat enough fish too, so you can find a lot of Tapas with fish.
The word tapa comes from an old habit of covering (in Spanish tapar), the wine glasses in taverns with a piece of bread or ham, to avoid insects or dust in them.
But it is also common to use the word pincho or pintxo, referring to a slice of bread with one or more ingredients (meat, fish, ham, cheese, omelette …). The name comes from the tradition of holding together the ingredients on the bread with a toothpick. The pincho is traditionally associated with the gastronomy of the Basque Country, but has also spread in the rest of Spain.