This is the 14058th most frequent Spanish word.
tapa
Cover, lid, or a small appetizer in Spanish cuisine.
Here, 'tapa' refers to the lid of a cooking pot, a common household object.
Por favor, coloca la tapa sobre la olla.
Please place the lid on the pot.
In this sentence, 'tapa' means a small serving of food, typical in Spanish cuisine, served with drinks.
Fuimos al bar y pedimos una tapa de jamón.
We went to the bar and ordered a small dish of ham.
This illustrates the versatility of 'tapa', here referring to a detachable cover or a flat object.