What does the highlighted "just" mean in the following paragraph?
Dumbledore turned and walked back down the street. On the corner he stopped and took out the silver Put-Outer. He clicked it once, and twelve balls of light sped back to their street lamps so that Privet Drive glowed suddenly orange and he could make out a tabby cat slinking around the corner at the other end of the street. He could just see the bundle of blankets on the step of number four. “Good luck, Harry,” he murmured. He turned on his heel and with a swish of his cloak, he was gone.
-- Harry Potter and the Sorcerer's Stone by J.K. Rowling
Which item do I need to pick up for the just on OALD or other else?