Cases of word usage

1) a long seat like a bed, used for sitting on or lying on during the day (couch)

2) to hatch (eggs) by sitting on them or by using artificial warmth (incubate)

3) one complete journey round a track or race-course; the front part of a person from the waist to the knees, when sitting (lap)

4) a comfortable sitting room, especially in a club or hotel (lounge)

5) something used or made for sitting on, e.g. a chair, box, bench; a place as an offcial member (seat)

6) (of work) done sitting down (at a desk etc); spending much of the time seated (sedentary)

7) (a game played on) a long plank with a person sitting on each end which can raise and fall alternately; any up-and-down or to-and-from movement (seesaw)

8) a person who is sitting for a portrait; baby-sitter (sitter)