Fecal/ˈfiːkl/ Definition 1 of 2Pro Tip 1/3Medical Jargon Used in medical discussions about bowel health and functions. The doctor ordered a fecal transplant for the patient. Pro Tip 2/3Professional Tone Common in healthcare, less so in casual conversation due to its clinical nature. We need to analyze the fecal samples for parasites. Pro Tip 3/3Not for Dining Talk Avoid using 'fecal' at mealtimes as it refers to waste and can be off-putting. Let's not discuss your fecal issues at the dinner table.