Plain English Meaning
The taxiway labeled with the letter K. 'Kilo' is just how pilots and controllers say the letter K out loud so it can't be confused with another letter.
Full Definition
A specific taxiway at an airport identified by the letter K, spoken as 'Kilo' using the ICAO phonetic alphabet. Taxiways are the paved paths connecting runways, ramps, and other airport areas, and each one is given a letter designator that pilots and controllers use to identify it clearly over the radio.
Context Anchor
Seen on airport signs, airport diagrams, and ground control instructions, including signs near runway safety area boundaries.