Common words from your childhood,that woukd have to be explained to your Grandchild.

Telephone boxes!

NO!

Typewriter. I heard, possibly on here, of a group of schoolchildren who saw one in a museum and one child remarked it came with its own built-in printer and how cool that was.

Sorry littleflo that was a bit abrupt. This is a great idea for a thread.
What about mangle? And cod liver oil.

Keep out of the horseroad.

One of my granddaughter's,looking at an old photo album,said"what was it like grandma living in a black and white world"

Jack Frost (on the inside of windows in winter).

I told the little girl next door that I was taping my programme. She didn’t have a clue what I was talking about. Apparently now you ‘record’ the television you don’t want to miss!

Blacking the grate; polishing the step; polishing the brasses; cleaning the silver.

'Spend a penny' for going to the toilet.
Send a film to be developed.
Spin dryer.
'Dial' a number.

Dimpsey. A Devonshire word meaning just getting dusk.

The Pictures

Recently in conversation with two eldest grandsons aged 11 and 12 I used the phrase that "everything would be hunky dory". They just looked at me completely puzzled and burst out laughing. I explained that it meant all would be well and it has now become a funny shared phrase as they wryly ask if something would be hunky dory.

Clothes horse.

Call the Midwife prompted a discussion on how a cinema film occasionally broke and the audience responded with whistles and whoops while the projectionist worked to restore it.

Hearth rug, or hearth for that matter. Fender, poker.

Shilling, half-crown and other pre-decimal coins.

Liberty bodice, as the OP mentions.

Gym tunic.

Telephone box. Telephone kiosks are still around but in this age of universal mobile phone use, I can't remember the last time I saw anyone use one. One grown up step grandchild was incredulous a couple of years ago when told her that we grew up in an age without mobile phone, "Oh God how did you manage" she wailed. "Quite well" came the numerous replies from the older members of the family

*we

Chimney sweep
Ten bob note

Choke - as in the choke in a car.

I like tee times No, could I add - stop mithering?

Horsepower. We had a ten horsepower car in the 1940s and ‘50s..

'Would you like to help me with the dolly and then put the sheets through the mangle?' [I used to love helping my nan do the washing]

football pools [do they still exist?]

The look on GC 's face when I told them their great grandfather really was Jack Frost.
Talking about my childhood, and not having television until I was married, GD asked me if I managed to catch up with my programmes on the computer.