/sum"euhr sawlt'/ , n.
1. an acrobatic movement, either forward or backward, in which the body rolls end over end, making a complete revolution.
2. such a movement performed in the air as part of a dive, tumbling routine, etc.
3. a complete overturn or reversal, as of opinion.
v.i.
4. to perform a somersault.
Also, somerset /sum"euhr set'/ , summersault, summerset .
[ 1520-30; sombresaut, alter. of sobresault; cf. OPr sobre over ( super ), saut a leap ( saltus ) ]