Lucas has had two previous spells with the National League side this season, scoring three goals in 10 appearances.
The 20-year-old made his Bristol Rovers debut in April 2014, but has yet to start a game for the League Two club.
"He has proved already that he is a handful for defences at this level and he gets goals," Wood manager Luke Garrard told the club website.
"He comes into a squad that is growing in confidence and will give me options in the forward areas."

Jason James, 41, of Charles Road, Torquay, previously admitted manslaughter at Winchester Crown Court.
Dave "Chewie" Coxon, from Torquay died after being struck once by his friend as they headed home after a night of heavy drinking.
They had both attended the 40th anniversary rally of the Modrapheniacs Scooter Club near Wareham in Dorset.
The pair, who were both members of the Cyder Commando Scooter Club, were heading back to their caravan on 5 March and stopped off to relieve themselves.
Mr James told police his friend had urinated on his leg and said: "I punched him and knocked him out", describing the blow as a "little whack".
He did not wait to see what state Mr Coxon, who never regained consciousness, was in, the court heard.
Judge Keith Cutler said: "What clearly should have been a weekend of fun and enjoyment turned into this tragedy."
Mr Coxon's brother Jonathan said after the case: "We can see very few circumstances where there would be sufficient provocation to justify this kind of cowardly attack."
Boreham Wood have re-signed striker Jamie Lucas from Bristol Rovers on loan until the end of the season.
[NEXT_CONCEPT]
A man has been jailed for four years for killing a fellow scooter enthusiast who urinated on his leg at a rally.