English Dictionary

A dividing membrane or thin partition, commonly with an opening through it.
Source : opted (42778)  - auto

The muscular and tendinous partition separating the cavity of the chest from that of the abdomen; the midriff.
Source : opted (42779)  - auto

A calcareous plate which divides the cavity of certain shells into two parts.
Source : opted (42780)  - auto

A plate with an opening, which is generally circular, used in instruments to cut off marginal portions of a beam of light, as at the focus of a telescope.
Source : opted (42781)  - auto

A partition in any compartment, for various purposes.
Source : opted (42782)  - auto