pia mater /pīˈə māˈtər/ (anatomy)

1. The vascular membrane surrounding the brain and spinal cord
2. The brain (Shakespeare)

• signallers
• signal letters
• signalling
• signallings
• signally
• signalman
• signalmen
• signal peptide
• signals
• signal sequence
• signal-to-noise ratio
• signal-to-noise ratios
• signaries
• signary
• signatories
• signatory
• signature
• signatures
• signature tune
• signature tunes
• sign away
• signboard
• signboards
• signed
• signer