This is the 3451st most frequent Turkish word.
mermer
Marble.
In this sentence, 'mermer' is used as a noun referring to the material 'marble.'
Bu binanın dış cephesi tamamen mermerle kaplanmış.
The exterior facade of this building is completely covered with marble.
Here, 'mermer' is used metaphorically to describe the coldness and smooth texture of the hand, comparing it to marble.
Eli sanki mermer kadar soğuk hissediliyordu.
Her hand felt as cold as marble.
In this case, 'mermer' again serves as a noun, specifying the material of which the sculpture is made.