| a chattering or flighty, light-headed person. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
residuum re·sid·u·um (rĭ-zĭj'&oomacr;-əm)
n. pl. re·sid·u·a (-&oomacr;-ə)
Something remaining after removal of a part; a residue.