\Nic"kle\, n. (Zo["o]l.) The European woodpecker, or yaffle; -- called also {nicker pecker}.
/ni'kl/ ["nickel", common name for the US 5-cent coin] A nibble + 1; 5 bits. Reported among developers for Mattel's gi 1600 (the intellivision games processor), a chip with 16 bit-wide ram but 10 bit-wide rom. See also deckle.
Webster's 1913 Dictionary