gar·rote or gar·rotte 
(gə-rŏt, -rōt)
(gə-rŏt, -rōt)n.
1.
a. A method of execution formerly practiced in Spain, in which a tightened iron collar is used to strangle or break the neck of a condemned person.
b. The iron collar used for such an execution.
2.
a. Strangulation, especially in order to rob.
b. A cord or wire used for strangling.
tr.v. gar·rot·ed, gar·rot·ing, gar·rotes or gar·rot·ted or gar·rot·ting or gar·rottes
1. To execute by garrote.
2. To strangle in order to rob.
[Spanish, cudgel, instrument of torture, possibly from Old French garrot, perhaps from garoquier, to struggle.]
gar·roter n.