- To recline while still in a seated position, with one's back on the frame of the seat.
- Please just sit back and watch the show.
- (idiomatic) To relax, to not exert oneself.
2010 December 28, Marc Vesty, “Stoke 0 - 2 Fulham”, in BBC:
- Predictably in the second half it was the Potters, who went searching for goals as Fulham sat back to defend their lead.
to recline while still in a seated position
to relax, to not exert oneself