1. To cause to become twisted together or caught in a snarl or entwining mass: The fishing lines became entangled. His foot was entangled in the wiring.

2. To involve in a complicated situation or in circumstances from which it is difficult to disengage: The country found itself entangled in a series of regional conflicts. She wanted to avoid relationships that might entangle her emotions. See Synonyms at catch.

3. Physics To cause (the quantum states of two or more objects) to become correlated in such a way that they remain correlated, even though the objects are separated spatially.