Lewis & Short

1. dēlĭquĭum, ii, n. [delinquo, no. I.], a want, defect (rare): solis, i. e. an eclipse (for which freq. defectus), Plin. 2, 12, 9, § 54; cf. Serv. Verg. A. 4, 390; Lact. Epit. 45, 10: solis lunaeque deliquia, Mart. Cap. 6, § 594.

* 2. dēlĭquĭum, ii, n. [deliquo], a flowing down, dropping down, Prud. Hamart. 753.