Entry 1 sense Webster, 1913 Larcenous /lär'-sən-əs/ · Lar·ce·nous · IPA /lˈɑrsənəs/ 01 a. Having the character of larceny; as, a larcenous act; committing larceny. 1. Having the character of larceny; as, a larcenous act; committing larceny.