portcullis /pōrt- or pört-kulˈis/

1. A grating that can be let down to close a gateway of a castle, fortress, etc
2. A lattice (heraldry)
3. One of the pursuivants of the English College of Heralds
4. An Elizabethan silver halfpenny with a portcullis on the reverse

To obstruct, as with a portcullis

• cast-offs
• cast on
• cast one's bread upon the waters
• cast one's mind back
• cast on someone's tail
• castor
• Castor
• castor action
• castor bean
• castor beans
• castoreum
• castoreums
• castories
• castor oil
• castor-oil plant
• castors
• castor sugar
• castory
• cast out
• castral
• castrametation
• castrametations
• castrate
• castrated
• castrates