well defined 
adjective
Clearly defined or described: without well-defined goals it is likely that efforts will be misdirected...
- There have always been clear and well-defined roles for the village Eurovision party.
- He has well-defined square, straight shoulders and a muscular chest kept remarkably youthful by a healthy exercise regimen.
- His brief was therefore clear and well-defined but he exceeded it.
- line of argument
- line of battle
- line of communications
- line of credit
- line of fire
- line of flight
- line of force
- line of latitude
- line of longitude
- line of march
- line of scrimmage
- line of sight
- line of thought
- line of vision
- line one's pocket
- line one's stomach
- line out
- line printer
- liner
- -liner
- liner note
- line score
- lineside
- linesman
- line someone/thing up