1.
You say that someone is ~ when they are thinking a lot about something in an unhappy way.
He became very withdrawn and ~.
ADJ
2.
A ~ hen is ready to lay or sit on eggs.
ADJ
3.
If you describe a young woman as ~, you mean that she wants to have a baby and she keeps thinking about it. (BRIT INFORMAL)
ADJ: usu v-link ADJ