The Collaborative International Dictionary of English v.0.48:
Garnish \Gar"nish\, v. t. [imp. & p. p. Garnished; p. pr. &
vb. n. Garnishing.] [OE. garnischen, garnissen, OF. garnir
to provide, strengthen, prepare, garnish, warn, F. garnir to
provide, furnish, garnish, -- of German origin; cf. OHG.
warn[=o]n to provide, equip; akin to G. wahren to watch, E.
aware, ware, wary, and cf. also E. warn. See Wary, -ish,
and cf. Garment, Garrison.]
1. To decorate with ornamental appendages; to set off; to
adorn; to embellish.
All within with flowers was garnished. --Spenser.
2. (Cookery) To ornament, as a dish, with something laid
about it; as, a dish garnished with parsley.
3. To furnish; to supply.
4. To fit with fetters. [Cant] --Johnson.
5. (Law) To warn by garnishment; to give notice to; to
garnishee. See Garnishee, v. t. --Cowell.