The Collaborative International Dictionary of English v.0.48:
Leonced \Le"onced\ (l[=e]"[o^]nst), a. (Her.) See Lionced. [1913 Webster]The Collaborative International Dictionary of English v.0.48:
Lionced \Li"onced\ (l[imac]"[u^]nst), a. (Her.) Adorned with lions' heads; having arms terminating in lions' heads; -- said of a cross. [Written also leonced.] [1913 Webster]