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

• pyrophyllites
• pyropus
• pyros
• pyroscope
• pyroscopes
• pyroses
• pyrosis
• Pyrosoma
• pyrosome
• multiskilled
• multiskilling
• multiskillings
• multiskills
• multisonant
• multispiral
• multi-stage
• multistorey
• multistoreys
• multistories
• multistory
• multistrike
• multisulcate
• multitask
• multitasked
• multitasking