Definition
To move slightly (sideways), in order to make room for someone; for example to move in a bed to make room for someone else to lie on, or to move sideways on a seat so as to allow someone room to sit and share that same seat.
To share a house or flat with another person, especially due to high rents.
To put on a more heterosexual manner, in order to be integrated or accepted; compare ‘butch’.
How People Actually Use It
hatch up is a verb used to describe the activity of building a community, mostly through events.
"I hatch up something there. It is a community in the eSport scene."
Source: Urban Dictionary