Wiktionary
rye seed
n. 1 (&lit: English) The seed of rye 2 caraway seed, used whole as a flavoring in the best-known type of rye bread- often mistakenly assumed to be the rye itself.
Usage examples of "rye seed".
Each scarecrow to be tested -- here a collection of Zealand rye scarecrows, whose sphere of action will be southwestern South Africa -- is expected to protect a limited radius of attraction, rendered alluring by rye seed, from the incursion of test sparrows.
She tried to convince herself that anything that crunched between her teeth was a barley grain or a rye seed.