The most common and most likely answer to this crossword clue is the 6 letter word SUMMON
S
U
M
M
O
N
More clues leading to the result SUMMON
- Call up star taking mass medium over
- Problem with French name, turning page
- Request appearance of everything before start of working week
- Get together the whole day
- In Paris we turned back with two thousand in rally
- Instruct male in type of wrestling close to Greco-Roman
- Call big meeting on replacing it
- Problem with military leader regarding command
- Problem? Mother's on call
Buddy explains!

The straight part
We know that "Call" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case call = summon.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 SUMMON mean?
SUMMON noun- Call, command, order
- To call people together; to convene.
- To ask someone to come; to send for.
- To order (goods) and have delivered
- To rouse oneself to exert a skill.
- To call a resource by magic.
- To summons; convene.