one's turn; one's time to appear
Used for a person's scheduled moment to go on stage, perform, or take a turn in a lineup. Often heard in entertainment or event contexts.
His turn to go on stage is still a while away, so let's wait in the dressing room.
Where do these vegetables come from?
出所 is a more standard term for 'source' or 'origin', while 出場所 is less common and may emphasize the physical place of production.
Compound of 出 (で, 'coming out') + 場所 (ばしょ, 'place'). The reading でばしょ is a straightforward combination of the kun'yomi readings of the components.