The most common and most likely answer to this crossword clue is the 4 letter word EDGE
I've seen this crossword clue in The Times
E
D
G
E
More clues leading to the result EDGE
- Boundary giving us the upper hand?
- Advantage duke found in, say, opening of estate
- Advantage in seed germination
- Advantage admitted by landed gentry
- Grunge band playing here finally shows bite
- Border broken up in united Germany
- Keenness shown by guard leaving hospital
- Wetland plant has no small advantage
- Advantage held by seed, generally
- Border straddled by distinguished gentlemen
Buddy explains!

The straight part
We know that "bite" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bite = edge.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 EDGE mean?
EDGE noun- The boundary line of a surface.
- A one-dimensional face of a polytope. In particular, the joining line between two vertices of a polygon; the place where two faces of a polyhedron meet.
- An advantage.
- The thin cutting side of the blade of an instrument, such as an ax, knife, sword, or scythe; that which cuts as an edge does, or wounds deeply, etc.
- A sharp terminating border; a margin; a brink; an extreme verge.
- Sharpness; readiness or fitness to cut; keenness; intenseness of desire.
- The border or part adjacent to the line of division; the beginning or early part (of a period of time)
- A shot where the ball comes off the edge of the bat, often unintentionally.
- A connected pair of vertices in a graph.
- In male masturbation, a level of sexual arousal that is maintained just short of reaching the point of inevitability, or climax; see also edging.
- To move an object slowly and carefully in a particular direction.
- To move slowly and carefully in a particular direction.
- (usually in the form 'just edge') To win by a small margin.
- To hit the ball with an edge of the bat, causing a fine deflection.
- To trim the margin of a lawn where the grass meets the sidewalk, usually with an electric or gas-powered lawn edger.
- To furnish with an edge; to construct an edging.
- To furnish with an edge, as a tool or weapon; to sharpen.
- To make sharp or keen; to incite; to exasperate; to goad; to urge or egg on.
- To delay one's orgasm so as to remain almost at the point of orgasm.