filter Copy link Outline I. Trans.1. cōlo, 12. lĭquo, 1 (to clear)3. sacco, 1 (artificially; by a bag)4. castro, 1 (of wine only; as it loses strength by the process)II. Intrans. • filter, filtrate: I. Trans.: to pass through a filter: 1. cōlo, 1: the earth f.ing the water, terra (aquam) colante, Plin. 31, 3, 23: Col.: v. to strain. Also comp. percōlo, to f. through, Plin.: Cato. 2. lĭquo, 1 (to clear): f.'d water, liquatae aquae, Plin. 31, 3, 22: Hor. (who uses it of straining wine when decanted, Od. 1, 11, 6). 3. sacco, 1 (artificially; by a bag): f.'d water, saccata aqua, Sen. Ep. 86, 10: Plin. 4. castro, 1 (of wine only; as it loses strength by the process): to f. wines, vina sacco c., Plin. 18, 7, 17. II. Intrans.: to be strained through, percōlor, 1: v. to percolate.