Celtic Love Knots

What is the meaning of the Celtic love knot also called the trinity knot?

The Celtic love knot is a modern-day Irish tradition. Also know as the trinity knot, it is a religious symbol with both pagan and Christians heritage. In Celtic mythology, knots especially Celtic love knots symbolize the sacred geometry of the universe and being. It is customary to give a loved one a gift with the trinity knot, or Celtic Love Knot,  like a necklace or ring, to embody feelings of love.