Noun
an alphabet used by the deaf; letters are represented by finger positions
Source: WordNetAD 1494 illustration of a finger alphabet and counting system originally described by Bede in AD 710. The Greek alphabet is represented, with three additional letters making a total of 27, by the first three columns of numbers. Source: Internet
Luca Pacioli modified the finger alphabet to the form shown above, where the handshapes for 1 and 10 on the left hand correspond to the 100s and 1000s on the right. Source: Internet
London: Meuthen several writers have speculated that the 5th century Irish Ogham script, with its quinary alphabet system, was derived from a finger alphabet that predates even Bede. Source: Internet