Definition: to wear an item of clothing to see if it  looks good and is the right size. This verb has more than one meaning.

E.g.1. Excuse me. Do you have a changing room? I'd like to try this dress on.

E.g.2.  These boots were expensive, but when I tried them on they fitted perfectly.

This phrasal verb can be separated.

Definition: To lose all concentration; to slip out of normal consciousness, and have nothing on your mind. Slang

Example: After working on a document for four hours straight, I zoned out in front of my computer screen.

Etymology: A 'zone' is an area or place. If you 'zone out', you mentally drift away from the place you are currently, and go off into empty, dreamy space.

Synonyms: space out

Definition: to stop working because of ice during cold weather.

E.g.1. Oh no! The lock has iced up!

E.g.2.  The water pipe had iced up and caused the heating system to stop working.

This phrasal verb can't be separated.

Definition: to sit or lie in a warm and comfortable position, with your body against another person. We only use this verb when the relationship between the two people is loving (family or close friends) or romantic (boyfriend, girlfriend etc).

E.g.1. She snuggled up to him and said, "I'm cold!"

E.g.2. They snuggled up and started kissing.

This phrasal verb can't be separated.