OVERTURN

v.

Pronunciation: ˌ ō -v ə r- ' t ə rn

Function: transitive verb

Date: 13th century

1 : to cause to turn over : UPSET < overturn ed the vase>

2 a : INVALIDATE , DESTROY b : REVERSE 2A < overturn a court ruling>

intransitive verb : UPSET , TURN OVER