k
noun
Definitions
A kilobyte (more formally KB or kB).
A kilobit (more formally kb), especially in measuring Internet connection.
Kilometre or kilometres.
Example: We drove 15 ks before we realised Billy wasn't in the back seat.
Thousand or thousands.
Example: Just about 65 k of Jack's full salary comes from servicing the Baker account.
Sources:https://en.wiktionary.org/wiki/k