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

• through traffic
• through train
• through trains
• throughway
• throughways
• throve
• throw
• throw about
• throw a fit
• throw around
• throw a spanner in the works
• throw away
• throwaway
• throwaways
• throw a wobbly
• throw back
• throwback
• throwbacks
• throw caution to the winds
• throw cold water on
• throw cold water over
• throw dirt
• throw down
• throw-down
• throw-downs