lace sth with sth meaning

• [American slang]
  to adulterate something with something, often with something alcoholic.
    Someone laced the punch with strong whiskey.
    Who laced my coffee with brandy?

• lace into so or sth:    [American slang]Fi ...
• lace so into sth:    [American slang]to ...
• lace sth up:    [American slang]to ...