Usually there are mounds, some sort of clearly definable entrance to them.

No wave is not a clearly definable musical genre with consistent features.

We are between eras everywhere, and it will be some time before we settle down to a clearly definable period in any of the arts.

It is a melange, to be sure, but given the technological nature of the medium, its roots and contours are clearly definable.

With no clearly definable military threat, and with the economy thriving, foreign policy has been remote from American voters' concerns.

For the most part, however, power has no clearly definable appearance, no shared language.

For a life-form that had no clearly definable brain she could detect, the alien proved a quick study.

Requiem is often said to have no clearly definable plot but has many themes which carry throughout the entire poem.

Her relationship with her mother wasn't as clearly definable.