beam hole
noun
a hole in the shield of a nuclear reactor through which a beam of radiation, esp of neutrons, is allowed to escape for experimental purposes
Words nearby beam hole
beam antenna,
beam brick,
beam compass,
beam engine,
beam fill,
beam hole,
beam lights,
beam mill,
beam reach,
beam riding,
beam sea
Example sentences from the Web for beam hole
Through the beam-hole at the stern the water began to flow into the interior of the ship.
The Onslaught from Rigel |Fletcher Pratt