Is it farther or further?
"fodder packed in a silo," 1884, alteration (probably by influence of silo) of ensilage (1881), from French ensilage, from ensiler "put in a silo," from Spanish ensilar (see silo).
Synchronous DSP specification language. ["Silage Reference Manual, Draft 1.0", D.R. Genin & P.N. Hilfinger, Silvar-Lisco, Leuven 1989].