To entwine means to twist or weave things together so they become tangled up with each other. When you entwine two ribbons, you wind them around each other until they form a single twisted strand. Ivy entwines itself around a fence post, wrapping and spiraling upward as it grows.

When things entwine, they wrap around and through each other, becoming difficult to separate. If you've ever tried to untangle a pair of entwined necklaces, you know how thoroughly things can weave together. The intertwining creates a single complex structure where the individual parts are hard to distinguish.

People use this word for physical objects, but also for relationships and ideas. Two families might become entwined through marriage, their histories and futures woven together. A mystery novel might have several plot lines that entwine, connecting in unexpected ways. When tree roots entwine underground, they create a stronger, more stable system than any single root could manage alone.

The word carries a sense of closeness and connection. Things that entwine become wrapped up in one another, sometimes so thoroughly that you can't tell where one ends and the other begins.