The most common and most likely answer to this crossword clue is the 8 letter word OSCULATE
I've seen this crossword clue in The Guardian
O
S
C
U
L
A
T
E
More clues leading to the result OSCULATE
- Foreign consulateto make oral contact
- Elaborate clues to ‘a kiss‘
- Kiss very upset copper on behind
- Pay lip service to very big copper behind schedule?
- Big copper’s ex gets kiss
- Pucker up to clue, as cryptic
- Kiss large copper recently!
- Seaman departed having grabbed copper for kiss
- Big copper’s ex gets to kiss under the mistletoe?
- Big copper’s ex gets to greet under the mistletoe
Buddy explains!

The straight part
We know that "Kiss" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case kiss = osculate.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 OSCULATE mean?
OSCULATE verb- To kiss someone or something.
- To touch so as to have a common tangent at the point of contact.
- To make contact.
- To perform osculation.
- To form a connecting link between two genera.
- Relating to kissing.