/ ˈtremə(r); NAmE / noun
1.
a small earthquake in which the ground shakes slightly :
an earth tremor
( figurative )
2.
a slight shaking movement in a part of your body caused, for example, by cold or fear
SYN quiver :
There was a slight tremor in his voice.
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WORD ORIGIN
early 17th cent.: from Latin tremor , from tremere to tremble.