Questions & Answers about La baldosa del pasillo está suelta.
Because baldosa is a feminine noun in Spanish, so it takes the feminine singular article la.
- la baldosa = the tile
- las baldosas = the tiles
The gender is grammatical, so it has to match the article and any adjectives connected to it.
Baldosa usually means a floor tile or paving tile.
In this sentence, it most naturally means a tile in the floor of the hallway.
A learner may confuse it with:
- suelo = floor, ground
- piso = floor / apartment (depending on context)
- azulejo = tile, often especially a wall tile
So baldosa is more specific than just floor.