VERB + KEYCHAIN
buy, key
KEYCHAIN + NOUN
souvenir
PREP.
from, on
noun
A chain or ring to which a key may be attached.
An ornamental piece holding such a chain or ring.
A digital repository for the storage of cryptographic keys.
Mary took the key from the keychain and handed it to Tom. He was now the owner of her little house.
Buy me a keychain as a souvenir.
How many keys are on your keychain?
They gave me a fob to easily sign out the kids from school, and I put it on my keychain.
Tom keeps multiple 20-sided dice on his keychain.