χωμᾰτ-ικός · chōmat-ikos — LSJ
connected with dykes, ἔργα ib. 13.6 (ii B. C.), Wilcken Chr. 388.3 (ii A. D.); without ἔργα, ib. 385.19 (iii B. C.), PSI 5.488.20 (iii B. C.).
χωματικόν, τό, tax for maintenance of dykes, ib. 4.344.14, 388.1 (iii B. C.), PHib. 1.45.23, al. (iii B. C.), Ostr.Bodl. i31 (iii B. C.), iii 79 (i A. D.): pl., PPetr. 3p.162 (iii B. C.), BGU 1198 (i B. C.), POxy. 288.20 (i A. D.).