Rear window unless of course your driving down the road in reverse, then I guess you could call it a windshield.

Back glass.

Most of people in the county I work in call the trunk the boot. It’s odd since I live in the next county over and never hear that term.

.

Nope, neither. Backlite. If you went to parts, and asked to schedule a back glass replacement, you would be corrected. At least that’s the way it was in 1977.

A guy walks into an auto parts store and says "I need the clips for my back glass, rear windshield, rear window, back light."

Counter guy looking confused "So what do you want the clips for? Those parts all have different part numbers..."

Customer "Do you have any in stock I can look at?"

Counter guy "No, I only show I have clips available for the rear windscreen."

Customer "OH! OK. I'll take those."

Counter guy "Can't sell them to you, they probably won't fit."

Customer "I'll take the chance."

Counter guy "I'll have to get my manager's approval!" as he walks away commenting to the other counter guy on the stupid customer that doesn't have a clue what he wants.

ordering parts is so complicated these days.

Around these parts, they call it a veHICKle.

You mean like when someone calls it a rear window instead of using the correct nomenclature?
Many parts of a vehicle have been called by differing names. Some have been used by different manufacturers contributing to the confusion of what is proper. In short, while even the industry standards aren't always adhered to by all manufacturers, some incorrect terms become common place.

It’s called a rear window around these parts.

Yeah, it is....unless you are some kind of dork.

Well, on a Dodge or Ram truck with one that can be opened it's called a sliding rear window, whether it's manual or powered.
When it was on the window sticker (Monroney Label) they call it a sliding rear window.

They don't call it a sliding rear Backlite.

There is only one windshield in most cars made today, it is in the front facing forward.

Everyone that I know outside of the auto industry calls it the back or rear window or glass. At the assembly plant that I worked in it was always referred to as the back light. Never window or glass and definitely not rear windshield.

If you are going backwards fast enough to need a rear windshield then you are probably doing something wrong.

you got it i worked for mopar in the pdc - ware house and it was called a backlite

My old Mitchell crash book calls it a back window.

It's a rear window. Windshield is called that because it shields you from wind while driving. A window is for viewing, which you do to see through.

i worked at mopar in a pdc warehouse for 17 years that where the dealer would get there parts and it was called a back light when i first started there i though what the heck is back lite

when i worked in a body shop back in '68, it was called a back light.
it almost seems like a regional term from the responses.

On the site https://www.ramtrucks.com/bmo.ram_2...W7,X8,ESB,DFX,DME,Z2D,TWD,WDA,TX,UAA,2GA

Where you option and build out a truck they call its a "Rear Sliding Window".

Tradesman Level 2 Equipment Group
$1,745

Black Exterior Mirrors
Cloth 40/20/40 Bench Seat
Exterior Mirrors with Heating Element
Carpet Floor-Covering
Overhead Console
Overhead Cupholder-Lamp
Power-Heated Mirrors with Fold-Away
Power Windows with Front One-Touch-Down Feature
Rear Sliding Window
Remote Keyless-Entry
SiriusXM® with 6-Month Radio Sub Call 800-643-2112
Speed-Sensitive Power-Locks
Upgraded Door Trim Panel
Active Noise-Control System (Unavailable with some configurations)
Front Rubber Floor Mats by Mopar® (Unavailable with some configurations)
Front Floor Mats (Unavailable with some configurations)