Definition of "sit down" [sit down]

• To assume a sitting position from a standing position. (verb)
• To cause to be seated or in a sitting posture; to furnish a seat to. (verb)

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• "My legs give out and I sit down on the grass, next to my cousin Kolya, who is engrossed in searching for something between his toes."
• "WE GET HOME, and Lon beelines it for his room while I sit down on the couch in the living room and let my head drop, like it was made of steel."
• "We sit down and the bouncer points out to Kravitz a loose-limbed, frat-boyish fellow who is dancing with an attractive blonde a few feet away."