a system of regular checking on prisoners who seem likely to attempt suicide.
close observation or supervision of someone in order to prevent suicide.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for suicide watch
a round-the-clock watch by warders on a prisoner considered to be in danger of harming him- or herself
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012