The most common and most likely answer to this crossword clue is the 7 letter word SEALANT
I've seen this crossword clue in The Guardian
S
E
A
L
A
N
T
More clues leading to the result SEALANT
- Perhaps tape large creature next to tiny one
- Set about man providing waterproofing substance
- Two animals closer?
- Marine animal and insect getting closer?
- In TV, a network providing watertight material
- Mastic maybe transported around Alabama
- Marine creature circling large water barrier?
- Excited as leant closer?
- It stops leaks from Bennett in television
- Blubbery creature atop insect creates sticky stuff
Buddy explains!
The straight part
We know that "closer?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case closer? = sealant.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 SEALANT mean?
SEALANT noun- Any material used to seal a surface so as to prevent passage of a fluid.
- A mixture of polymers, fillers, and pigments used to fill and seal joints where moderate movement is expected.