Step 1 : Introduction to the question "What does "-.-" mean in Morse code?"
...In the 1830s and 1840s, the telegraph revolutionized long-distance communication by transmitting electrical signals over a wire. Before long, great stretches of wire crisscrossed the country between telegraph stations. Samuel Morse developed the transmission code that bears his name. It is a system of dots and dashes, with each letter of the English alphabet having its own designation. Morse code made it simple to transmit complex messages over telegraph lines. In Morse code, "-.-" stands for the letter K. Source: History.com