entanglement

noun

1. 1.The state of being entangled; intricate and confused involution.
2. 2.That which entangles; intricacy; perplexity.
3. 3.An obstruction placed in front or on the flank of a fortification, to impede an enemy's approach.
4. 4.An obstruction of cables and spars across a river or harbour entrance.
5. 5.A quantum mechanical phenomenon in which the quantum states of two or more objects have to be described with reference to each other, even though the individual objects are spatially separated.