1.Definition: inferior in rank or status

"A lowly corporal"

Related Adjective(s):petty, secondary, subaltern

2.Definition: low or inferior in station or quality

"A lowly parish priest"

Related Adjective(s):humble, low, modest, small

3.Definition: of low birth or station (`base' is archaic in this sense)

"Of humble (or lowly) birth"

Related Adjective(s):base, baseborn, humble

4.Definition: used of unskilled work (especially domestic work)

Related Adjective(s):humble, menial