φρουρά

A. look-out, watch, guard, as a duty, A. Ag. 2, Hdt. 2.30, IG 12.3.26, etc.; ἐς φ. δόμων E. Or. 1252; φρουρὰν ἐτάξαντ’ ἐν δόμοις Id. Andr. 1099; φρουρὰν ἄζηλον ὀχήσω shall keep unenviable watch, A. Pr. 143 (anap.); ὄμματος φρουρά my watchful eye, S. Tr. 226; φρουρᾶς ᾄδων singing while on guard, to keep oneself awake or while away the time, Ar. Nu. 721 (anap.); τοῖς . . πιστοτέροις . . διετέτακτο ἡ φ. Pl. Criti. 117d.
2. a watch of the night, ἡ νυκτερινὴ φ. Hdn. 3.11.6; v.l. in E. Rh. 5 (anap.).
3. prison, ward, Pl. Phd. 62b, Grg. 525a.
II. of persons set to watch, guard, garrison, Hdt. 6.26, 7.59, A. Ag. 301, Th. 3.51, IG 22.28.14, etc.; esp. of frontier-posts, X. HG 6.5.24, etc.; στρατειῶν καὶ φρουρῶν Lys. 16.18; ἐξήλθομεν εἰς Πάνακτον φρουρᾶς προγραφείσης being ordered on garrison-duty, D. 54.3; τὰ κύκλῳ κατέχειν ἁρμοσταῖς καὶ φρουραῖς Id. 18.96; φρουρὰν ὑποδέχεσθαι Id. 58.38.
2. at Sparta, a body of men destined for service, φρουρὰν φαίνειν proclaim or order out a levy, 'call out the ban', of the ephors and kings, X. HG 3.2.23, 6.4.17; ἐπί τινας ib.4.7.1, etc.; εἰδότες φρουρὰν πεφασμένην ἐφ’ ἑαυτούς ib.5.1.29; φ. ἐξάγειν ib.2.4.29.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project