The Collaborative International Dictionary of English v.0.48:

Garnishee \Gar`nish*ee"\, v. t. [imp. & p. p. Garnisheed
   (-[=e]d); p. pr. & vb. n. Garnisheeing.] (Law)
   (a) To make (a person) a garnishee; to warn by garnishment;
       to garnish.
   (b) To attach (the fund or property sought to be secured by
       garnishment); to trustee.
       [1913 Webster]