Related Clues:

• Bity type of revolutionary extract from Plato identified
• Letter incorporated in Riot Act
• 'Not one ___!'
• Merest shred
• A tiny amount; ninth letter of the Greek alphabet
• A whit
• I as in Icarus
• Greek letter whose name has three vowels
• Measurement for a tiny quantity
• Cyclops's 'I'
• Little bit from Eliot analysed
• (Not one) little bit
• Smallest Greek letter
• Island postman regularly delivering letter
• Tiny letter?