scrimshank
Concise Oxford English Dictionary © 2008 Oxford University Press:
scrimshank /ˈskrɪmʃaŋk/
▶verb Brit. informal (especially of a person in the armed services) shirk one's duty.
– derivatives
scrimshanker noun.
scrimshanker noun.
– origin C19: of unknown origin.
'scrimshank' also found in these Oxford entries:

