Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
com-plōdo, si, sum, 3, v. a. [plaudo]: manus, to strike or clap the hands together in applauding, from joy, pain, etc. (only in post-Aug. prose): complodere manus scaenicum est, Quint. 11, 3, 123; so Petr. 18, 7; 20, 5; Sen. Ira, 1, 1, 4; App. M. 9, p. 235, 33.