Liddell-Scott-Jones

φρουρά (phroura) a detachment of soldiers ^G:N-F

φρουρά,

Ionic dialect φρουρή, ἡ: (see. φρουρός near the end):— look-out, watch, guard, as a duty, [Refs 5th c.BC+]; φρουρὰν ἄζηλον ὀχήσω shall keep unenviable watch, [Refs 4th c.BC+]; ὄμματος φρουρά my watchful eye, [Refs 5th c.BC+]; φρουρᾶς ᾄδων singing while on guard, to keep oneself awake or while away the time, [Refs 5th c.BC+]

__2 a watch of the night, ἡ νυκτερινὴ φ. [Refs 2nd c.AD+]; variant in [Refs 5th c.BC+]
__3 prison, ward, [Refs 5th c.BC+]
__II of persons set to watch, guard, garrison, [Refs 5th c.BC+]; especially of frontier-posts, [Refs 5th c.BC+]; ἐξήλθομεν εἰς Πάνακτον φρουρᾶς προγραφείσης being ordered on garrison-duty, [Refs 4th c.BC+]
__II.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, [Refs 5th c.BC+]