What is "lowgrade"

Usage examples of "lowgrade".

A strange lowgrade sort of desire it must be, to be spread out over every day of the year and never to know the choice of sex, but there it is.

The lowgrade smile became a barn-burner, and he almost jumped over the counter at her.

A year later Arnie's mother had been born with lowgrade telekinesis, just enough to move a coin a few inches across a plastic tablecloth.