1) Strike or tap firmly 1) Tap 
• (v. i.) To strike or tap in an examination by percussion. See Percussion, 3. • (v. t.) To strike smartly; to strike upon or against; as, to percuss the chest in medical examination.
(pәr-kus´) to perform percussion.
Per·cuss' intransitive verb (Medicine) To strike or tap in an examination by percussion. See Percussion , 3. Quain. Per·cuss' transitive verb [ imperfect & past participle Percussed ; present participle & verbal noun Percussing .] [ Latin percussus , past participle of percutere ; per + quatere to shake, strike. See Quash...
Type: Term Pronunciation: per-kŭs′ Definitions: 1. To perform percussion.
[v] - strike or tap firmly