The most common and most likely answer to this crossword clue is the 7 letter word BULLDOG
I've seen this crossword clue in The Daily Telegraph
B
U
L
L
D
O
G
More clues leading to the result BULLDOG
- Tenacious type on board, fifty points to pursue
- Inconsistent statement to plague Oxford official
- Rubbish setter, perhaps, but one with tenacious spirit
- Command Father to reject symbol of this country
- Interchange leads to dreary Slough, symbol of Britain
- Animal’s strong tail
- Gun clip
- See aggressive male do good — man of courage?
- Male animals breed!
- Oxford college attendant gives edict: Do good
Buddy explains!

The straight part
We know that "Oxford college attendant" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case oxford college attendant = bulldog.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 BULLDOG mean?
BULLDOG noun- A breed of dog developed in England by the crossing of the bullbaiting dog and the Pug to produce a ladies companion dog. Having a very smooth coat, a flattened face, wrinkly cheeks, powerful front legs and smaller hind legs.
- British bulldog
- A stubborn person.
- A refractory material used as a furnace lining, obtained by calcining the cinder or slag from the puddling furnace of a rolling mill.
- (Oxford University slang) One of the proctors' officers.
- (pro wrestling) Any move in which the wrestler grabs an opponent's head and jumps forward, so that the wrestler lands, often in a sitting position, and drives the opponent's face into the mat.
- A bulldog edition.
- To chase (a steer) on horseback and wrestle it to the ground by twisting its horns (as a rodeo performance).