The most common and most likely answer to this crossword clue is the 7 letter word FOOTMAN
I've seen this crossword clue in The Daily Telegraph
F
O
O
T
M
A
N
More clues leading to the result FOOTMAN
Buddy explains!
The straight part
We know that "Servant" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case servant = footman.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 FOOTMAN mean?
FOOTMAN noun- A soldier who marches and fights on foot; a foot soldier.
- A man in waiting; a male servant whose duties are to attend the door, the carriage, the table, etc.
- A servant who runs in front of his master's carriage.
- A metallic stand with four feet, for keeping anything warm before a fire.
- A moth of the family Arctiidae (or subfamily Arctiinae); -- so called from its livery-like colors.
- A bar that connects the treadle of a spinning wheel to the wheel.