The most common and most likely answer to this crossword clue is the 5 letter word TELCO
T
E
L
C
O
More clues leading to the result TELCO
Buddy explains!

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 TELCO mean?
TELCO noun- A telecommunications company, a telecom.