Nicker

• (v. t.) One of the night brawlers of London formerly noted for breaking windows with half-pence. • (v. t.) The cutting lip which projects downward at the edge of a boring bit and cuts a circular groove in the wood to limit the size of the hole that is bored. • (v. t.) One of the night brawlers of London formerly noted for breaking ...
Found on http://thinkexist.com/dictionary/meaning/nicker/

Nicker

Nick'er noun [ From Nick , transitive verb ] 1. One of the night brawlers of London formerly noted for breaking windows with half- pence. [ Cant] Arbuthnot. 2. The cutting lip which projects downward at the edge of a boring bit and cuts a circular ...
Found on http://www.encyclo.co.uk/webster/N/20

Nicker

Nicker is British slang for a pound sterling (and formerly a sovereign also).
Found on http://www.probertencyclopaedia.com/browse/ZN.HTM

Nicker

£1.
Found on http://www.hemyockcastle.co.uk/money.htm
No exact match found