SIGNAL Copy link • SIGNAL 1. s. signum. To give a signal, signum dare (general term): signum canere (with the trumpet): to give the signal for an attack, classicum canere (if with the trumpet): the signal for an attack is given, classicum canit: to give or make a signal by fire, ignibus significationem facere: a signal at night, insigne nocturnum (e.g., of three lights, trium luminum, Liv., 29, 25, § 11, on board the flag ship): a signal of distress, *periculi signum: to give or fire a signal of distress. *tormento significationem periculi facere: to fire signal guns, *tormento significationem (periculi) facere (if in a case of distress): signal-ship, navis speculatoria; navigium speculatorium. 2. adj., [Vid: DISTINGUISHED.] A signal defeat, calamitas: obitus (as euphemistic expressions used by the Romans; Vid: the remark in ROUT).