There was one thing the prosecution and defense agreed on Tuesday as the four-week bribery trial of former Brooklyn Supreme Court Justice Gerald P. Garson drew to a close: Both sides reserved harsh criticism for the prosecution’s key witness, disbarred lawyer Paul Siminovsky.

Michael F. Vecchione, the lead prosecutor and chief of the rackets division in the Brooklyn District Attorney’s office, described the disgraced lawyer as “vermin.” Garson’s lawyer, Michael S. Washor, called him a “weasel.”