What does the red mean?

[v0031]

YouTube shared video of the spotted cat reaching up to the middle drawer of a five-drawer dresser to prepare its hiding place.
The smart cat managed to sneak its paws into the crease of the dresser and open up the drawer before hoisting itself inside.
Once inside the drawer the cat laid down and manage to shimmy until the drawer slowly slid completely shut

I can't decide which of its meaning in the dicts fits the text here.

[v0031]

England book publishers Bloomsbury Books shared a photo of the hundreds of students as they set the Guinness World Record for most people dressed as Harry Potter in one gathering.
A total of 676 students from 11 primary schools gathered in front of Smithills Hall dressed in Gryffindor ties, glasses, wands and scars while standing line for five minutes to break the world record.
The previous world record was set in 2015 in West Sussex and featured 521 Harry Potter's.