sescēnāris, e, adj. [deriv. and signif. unknown]:
bovis sescenaris jecur, Liv. 41, 15, 1 (but the conjectural correction to sescennalis or sexennis is improbable) Weissenb. ad loc.
sēscēnāris e, adj.perh. sesqui+annus, of one and a half years, eighteen months old : bos, L. ...
An Elementary Latin Dictionary