bol. means bolus - as a large single dose usually intravenously in Prescription
Similar to bol.
noct. - nocte - at night non rep. - non repetatur - no repeats NS - normal saline 0.9% o.p.d. - once per day o.s. - oculus sinister - left eye o.u. - oculus uterque - both eyes od - oculus dexter - right eye