GYROSCOPE:
■ noun
Apparatus used to maintain balance,ascertain direction etc.,
Rotating mechanism in the form of a universally mounted spinning wheel that offers resistance to turns in any direction.
eg.They successfully completed their main objective of removing and replacing a faulty gyroscope on the International Space Station.
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GUFFAW:
■ noun
A burst of deep loud hearty laughter;a boisterous laugh.
eg.In fact we had a discreet guffaw regarding the matter when I met him on Saturday afternoon for High Tea.
