Adjective has 1 sense

• synecdochical(s = adj.all) synecdochic - using the name of a part for that of the whole or the whole for the part; or the special for the general or the general for the special; or the material for the thing made of it; "to use `hand' for `worker' or `ten sail' for `ten ships' or `steel' for `sword' is to use a synecdochic figure of speech"

Derived form noun synecdoche₁