Trojan \Tro"jan\, n. One who shows the pluck, endurance, determined energy, or the like, attributed to the defenders of Troy; -- used chiefly or only in the phrase like a Trojan; as, he endured the pain like a Trojan; he studies like a Trojan.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Trojan \Tro"jan\, a. [L. Trojanus, fr. Troja, Troia, Troy, from Tros, Gr. Trw`s, Trwo`s, Tros, the mythical founder of Troy.]

Of or pertaining to ancient Troy or its inhabitants. -- n. A native or inhabitant of Troy.

Source: Webster's Revised Unabridged Dictionary (1913)