Definitions
1.nounA period during which one is seated for a specific purpose."Due to the sheer volume of guests, we had to have two sittings for the meal."
2.nounA special seat allotted to a seat-holder, at church, etc.
3.nounThe part of the year in which judicial business is transacted.
4.nounA legislative session (in the sense of "meeting", not "period").
5.nounThe incubation of eggs by a bird.
6.nounA clutch of eggs laid by a brooding bird."we have thirty-four chicks from eight sittings of eggs"
7.nounUninterrupted application to anything for a time; the period during which one continues at anything.