Crossword Genius

She's expecting a family supplement (6-2-2)

Ross

I believe the answer is:

mother-to-be

I'm a little stuck... Click here to teach me more about this clue!

'she's expecting' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for mother-to-be that I've seen before include "She's expecting" , "One expecting a baby" , "Expecting woman?" .)

I've seen this clue in The Globe and Mail.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.