The term 'Tire Swing Securer' refers to someone who ties a KNOT to secure a tire swing. This job requires the person to be able to tie a strong KNOT that will hold the tire swing in place and prevent it from coming loose. The crossword solution for this term is 'KNOT, ' which is a four-letter word. A KNOT is a type of fastening that is created by tying rope, string, or other material in a specific pattern. Knots are commonly used to secure items such as boats, sails, and tire swings.