full nelson

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A wrestling hold in which both hands are thrust under the opponent's arms from behind and then pressed against the back of the opponent's neck.

Wiktionary

1. n. wrestling A hold in which the wrestler applying the hold puts their arms under the arms of their opponent and apply's pressure to the back of their opponents head or neck.

WordNet 3.0

1. n. a wrestling hold in which the holder puts both arms under the opponent's arms and exerts pressure on the back of the neck (illegal in amateur wrestling)