shí​bǎn

slab

石板 shí​bǎn
slab noun
a broad, flat, and usually rectangular piece of stone used for paving, walkways, or construction
slate noun
a fine-grained metamorphic rock that splits into thin layers, or a piece of this rock used as a roofing tile or writing surface

This kind of slate is hard and is often used to make roof tiles.

Frequency

Movie subtitles
1.55 per million appears in 0% of films
Written text
3.56 per million

Sources

Definitions
CC-CEDICT