The most common and most likely answer to this crossword clue is the 4 letter word SNOG
S
N
O
G
More clues leading to the result SNOG
- Small drink for pet
- Pet snake nibbled our goldfishes’ heads!
- Son confused by girl’s first kiss
- Game partners try turning over to canoodle
- Second drink leading to a bit of nooky
- Second drink and a kiss and a cuddle
- In tears – no gal to kiss and cuddle
- Some braces no good for neck
- Kiss woman too and hug ends
- Partially returned dragon’s smack
Buddy explains!

The straight part
We know that "neck" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case neck = snog.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SNOG mean?
SNOG noun- A passionate kiss.
- To kiss passionately.