The party's ideological line was not clearly defined at first.

As he did so, the lines of his body became firmer and more well defined.

The line of demarcation was then more clearly defined than is the case at present.

In professional sports, some lines are defined by the individual governing bodies.

There was a short, straight, horizontal line deeply defined in the rock.

The line between skill and luck in combat is not very well defined.

These rules govern operation on main lines, defined as those with some form of block control system.

Moreover, the line between legality and security is not easily defined.

As I remember, the lines between the working poor and dependent poor were never so clearly defined.