Liddell-Scott-Jones

σύμβολον (sumbolon) a symbol ^G:N-N

σύμβολον, τό,

tally, i.e. each of two halves or corresponding pieces of an ἀστράγαλος or other object, which two ξένοι, or any two contracting parties, broke between them, each party keeping one piece, in order to have proof of the identity of the presenter of the other, ἀποδεικνύντες τὰ σ. ἀπαίτεον τὰ χρήματα [Refs 5th c.BC+]; διαπεπρισμένα ἡμίσε᾽ ἀκριβῶς ὡσπερεὶ τὰ σ. [Refs 4th c.BC+]; ὡς σ. ὀρέγεται ἀλλήλων [τὰ ἐναντία] [Refs 4th c.BC+]; ζητεῖ.. τὸ αὑτοῦ ἕκαστος σ. [Refs 5th c.BC+]; ἔχειν σύμβολα πρὸς ἄλληλα complementary factors, [Refs]; ποιησάσθω σύμβολα ἡ βουλὴ πρὸς τὸν βασιλέα τὸν Σιδωνίων, ὅπως ἂν ὁ δῆμος ὁ Ἀθηναίων εἰδῇ, ἐάν τι πέμπῃ κτλ. [Refs]

__b of other devices having the same purpose, e.g. a seal-impression on wax, [Refs 3rd c.BC+] (hence ς. = signet-ring, [Refs 1st c.AD+]; an extant bronze hand is inscribed σ. πρὸς Οὐελαυνίους [Refs 2nd c.BC+]
__2 any token serving as proof of identity, ἔλαβε σ. παρὰ βασιλέως τοῦ μεγάλου φιάλην χρυσῆν [Refs 5th c.BC+]; τὰ μητρὸς σ. [Refs 5th c.BC+]; ἰδοὺ τὰ σ. here are my credentials, [Refs 2nd c.AD+]; ἔχοντες σ. σαφὲς λύπης bearing clear credentials (consisting) of (a common) grief, [Refs 5th c.BC+]
__3 guarantee, σ. τῆς παιδεύσεως πιστότατον [Refs 5th c.BC+]
__4 token, especially of goodwill, χρυσίον σ. φιλίας καὶ ξενίας [Refs 1st c.AD+]
__5 identity-token given to Athenian dicasts on entering the courts, entitling them to vote, and on presenting which they received another ς., in exchange for which they received their fee, [Refs 5th c.BC+]; also in the ecclesia, [Refs 5th c.BC+]; διάδοσις τῶν σ. [Refs]: extant theatre-tokens (without the word ς.) in [Refs 4th c.BC+]
__6 at Rome, = tessera, token entitling the bearer to a donation of corn or money, [Refs 2nd c.AD+]
__II of written documents,
__II.1 passport or the seal thereon, [Refs 5th c.BC+]; ἐκπλεῖν μηδένα ἀστῶν μηδὲ μέτοικον ἄνευ σ. [Refs 4th c.BC+]
__II.2 passenger-list, ἐμοῦ [τοῦ Ἑρμοῦ] τοὺς νεκροὺς ἀπαριθμοῦντος τῷ Αἰακῷ κἀκείνου λογιζομένου αὐτοὺς πρὸς τὸ.. πεμφθὲν αὐτῷ σ. [Refs 2nd c.AD+]
__II.3 plural, treaty between two states providing for the security of one another's citizens and sometimes for the settlement of commercial and other disputes (usually in the law-courts of the defendant's city [Refs 5th c.BC+]; ἀπὸ συμβόλων δικάζεσθαι, κοινωνεῖν, [Refs 5th c.BC+]; κατὰ τὸ σ. [Refs 4th c.BC+]; κατὰ τὸ δοχθὲν κοινᾷ σ. [Refs]
__II.4 contract between individuals, [Refs 3rd c.BC+]; αἰσχρὰ κακοῖς ἔργοις σ. θηκάμενοι forming disgraceful compacts (sealed) by evil deeds, [Refs 6th c.BC+]
__II.5 receipt, sometimes made out in duplicate, σ. διπλᾶ ἐσφραγισμένα [Refs 3rd c.BC+]; τὸ σ. τῆς ἀποχῆς [Refs 3rd c.BC+]; σ. ἀποχῆς [Refs 3rd c.BC+]; σύμβολον ποιήσασθαι πρὸς αὐτόν [Refs 3rd c.BC+]; σ. καὶ ἀντισύμβολα [Refs 1st c.BC+]; receipt for a pledged article, PCair. Zen.[Refs 3rd c.BC+]
__II.5.b fee for making out a receipt, [Refs 2nd c.AD+]
__II.6 unilateral undertaking in writing, guarantee, [Refs 3rd c.BC+]
__II.7 warrant entitling the holder to draw allowances over a period, τοῦ κθ ἔτους τὸ σ. τοῦ ὀψωνίου καὶ τῆς ἀγορᾶς σύνταξον γράψαι [Refs 3rd c.BC+]; σ. σιτικὰ καὶ ἀργυρικά (bequeathed) [Refs 2nd c.BC+]; σφράγισαι τὸ σ. [Refs 3rd c.BC+]; τὰ σ. τῶν σιταρχιῶν [Refs 1st c.BC+]
__II.8 warrant or commission from the Emperor, by which officers held their posts, [Refs]; σ. τριβούνου [Refs]
__III more generally, token, φυλάσσω λαμπάδος τὸ σ. the beacon-token, [Refs 4th c.BC+]; μανθάνω τὸ σ. [Refs 5th c.BC+]; clue, [Refs 5th c.BC+]; χειμῶνος σ. a sign of an approaching storm, [Refs 5th c.BC+]; τὰ τεχνητὰ τῶν σ. [Refs 1st c.AD+]; νίκης σ. Ἰσθμιάδος, of the celery-wreath, [Refs 3rd c.BC+]; τὰ τῶν στρατοπέδων σ. legionary standards, [Refs 2nd c.AD+]; insignia of deities, [Refs 3rd c.BC+]
__III.2 omen, portent, [Refs 7th c.BC+]; οἱ διὰ συμβόλων.. προλέγοντες distinguished from other kinds of μάντεις, [Refs 2nd c.AD+];= auspicium, [Refs]; ἐν τοῖς λικμητηρίοις γεννώμενα τὰ βρέφη ἐτίθεσαν εἰς σ. εὐτροφίας [Refs 4th c.BC+]
__III.3 in Medicine texts, symptom, [Refs 2nd c.AD+]
__III.4 prearranged signal, ἐπιχειρήσεως [Refs 1st c.AD+]; watchword, [Refs 5th c.BC+]
__III.5 secret code, τὰ μυστικὰ σ. τῶν περὶ τὸν Διόνυσον ὀργιασμῶν, ἃ σύνισμεν ἀλλήλοις οἱ κοινωνοῦντες [Refs 1st c.AD+]; consisting of a signum and a responsum, [Refs 4th c.AD+]; τὰ σ. [Πυθαγόρου] [Refs 4th c.BC+]; περὶ Πυθαγορικῶν σ., title of a work by Androcydes, [Refs 4th c.AD+]; secret sign, γράψαι τι σ. ἐν πίνακι,.. μαθεῖν τὸν θέντα τὸ σ. [Refs 2nd c.AD+]; allegory, [Refs 4th c.BC+]
__III.6 religious creed, τὸ ἅγιον μάθημα ἤτοι σ. [Refs]
__IV plural, standard weights, [Refs]
__V a small coin, perhaps a half-obol, shaped D, [σύμβολον κεκαρμένος">Refs 5th c.BC+] with half the head shaved, [Refs 5th c.BC+]