alicastrum

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

ălĭcastrum, i, n., sc. frumentum [alica],

a kind of spelt , summer-spelt (i. e. sown in the spring), Col. 2, 6; 2, 9; cf. Isid. Aug. 17, 3.