• (n.) A small lion, especially one of several borne in the same coat of arms.
Li'on·cel (lī'ŭn*sĕl) noun [ Old French , French lionceau , dim. of lion .] (Her.) A small lion, especially one of several borne in the same coat of arms. 
In heraldry, a lioncel is a small lion, especially one of several borne in the same coat of arms.