The most common and most likely answer to this crossword clue is the 9 letter word RETENTIVE
I've seen this crossword clue in The Guardian
R
E
T
E
N
T
I
V
E
Buddy explains!

The straight part
We know that "Can well recall" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case can well recall = retentive.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 RETENTIVE mean?
RETENTIVE noun- That which retains or confines; a restraint.
- Having power to retain
- (slang, apocope) anal-retentive