Wiktionary
knife block
n. A block of wood (or other material) having slits into which kitchen knife may be stored safely
Usage examples of "knife block".
And then her eyes lit on a knife block on a table beside the far wall.
Ru moved the cleaver and the knife block out of the Dog Warrior's range.
I remembered seeing a knife block on the counter when I was looking for the phone.
She took a pair of kitchen scissors from the knife block and cut the washing line that bound Stanley's hands and feet.