Synecdochical (or Greek) Accusative.
[180]. 1. The Synecdochical (or Greek) Accusative denotes the part to which an action or quality refers; as,—
tremit artūs, literally, he trembles as to his limbs, i.e. his limbs tremble;
nūda genū, lit. bare as to the knee, i.e. with knee bare;
manūs revinctus, lit. tied as to the hands, i.e. with hands tied.
2. Note that this construction—
a) Is borrowed from the Greek.
b) Is chiefly confined to poetry.
c) Usually refers to a part of the body.
d) Is used with Adjectives as well as Verbs.
Accusative of Time and Space.
[181]. 1. Duration of Time and Extent of Space are denoted by the Accusative; as,—