palstave
Concise Oxford English Dictionary © 2008 Oxford University Press:
palstave /ˈpɔːlsteɪv/
▶noun Archaeology a type of chisel shaped to fit into a split handle rather than having a socket for the handle.
– origin C19: from Dan. paalstav, from ON pálstavr, from páll ‘hoe’ + stafr ‘staff’.
'palstave' also found in these Oxford entries:

