Entry 2 senses · 2 variants Webster, 1913 Poltroon · Pol·troon · IPA /pɑlˈtɹun/ n. a. 01 n. An arrant coward; a dastard; a craven; a mean-spirited wretch. 1. An arrant coward; a dastard; a craven; a mean-spirited wretch. 02 a. Base; vile; contemptible; cowardly. 1. Base; vile; contemptible; cowardly.