Wordnet 3.0
NOUN (1)
1.
container consisting of any configuration of magnetic fields used to contain a plasma during controlled thermonuclear reactions;
The Collaborative International Dictionary of English v.0.48:
magnetic bottle \magnetic bottle\ n. (Physics)
Any configuration of magnetic fields used to contain a plasma
during controlled thermonuclear reactions.
[WordNet 1.5]
WordNet (r) 3.0 (2006):
magnetic bottle
n 1: container consisting of any configuration of magnetic
fields used to contain a plasma during controlled
thermonuclear reactions