to become less crowded; to thin out; to get empty; to be clear; become less crowded; to thin out; to get empty; to be clear; to be hungry; hungry; to relieve; to unburden; relieve; to unburden; to be vacant; to be available; to be free; vacant; to be available; to be free; to be empty; empty; to have a hole; to form a gap; to have an interval; have a hole; to form a gap; to have an interval; to become vacant / to open; become vacant / to open
