Lewis Short
ālec | allec; hallec, ēcis | ālex | hāl- (noun N.f.m) : (better, also in MSS.), , n., or (), , f. and m. (v. Rudd. I. p. 17, n. 93; Schneid. Gr. 2, 110 and 128), acc. to Plin. 31, 8, 44, § 95
* The sediment of a costly fish-sauce, garum; and in gen. the sauce prepared from small fish, fish-pickle, fish-brine: alec danunt, * Plaut. Fragm. ap. Non. 2, 395; 120, 3: faecem et allec,Hor. S. 2, 4, 73; 2, 8, 9 K. and H.: putri cepas hallece natantes,Mart. 3, 77 Schneid.—The plur. not in use, v. Prisc. p. 686 P.
Charlton T. Lewis, Charles Short, A Latin Dictionary