The Collaborative International Dictionary of English v.0.48:
Rustic \Rus"tic\, a. [L. rusticus, fr. rus, ruris, the country:
cf. F. rustique. See Rural.]
1. Of or pertaining to the country; rural; as, the rustic
gods of antiquity. "Rustic lays." --Milton.
And many a holy text around she strews,
That teach the rustic moralist to die. --Gray.
She had a rustic, woodland air. --Wordsworth.
2. Rude; awkward; rough; unpolished; as, rustic manners. "A
rustic muse." --Spenser.
3. Coarse; plain; simple; as, a rustic entertainment; rustic
4. Simple; artless; unadorned; unaffected. --Pope.
Rustic moth (Zool.), any moth belonging to Agrotis and
allied genera. Their larvae are called cutworms. See
(a) (Arch.) Cut stone facing which has the joints worked
with grooves or channels, the face of each block
projecting beyond the joint, so that the joints are
(b) (Arch. & Woodwork) Summer houses, or furniture for
summer houses, etc., made of rough limbs of trees
Syn: Rural; rude; unpolished; inelegant; untaught; awkward;
rough; coarse; plain; unadorned; simple; artless;
honest. See Rural.