leister UK /ˈliːstə/US /ˈlistɚ/noun 1verb 1forms 3 noun1 •A spear armed with three or more barbed prongs for catching fish, particularly salmon.Rob Runchy, as a forlorn hope, once threw his clodding leister at a drowning man floating down the Yarrow in a high flood, and hauled him out with the lyams unharmed. — 1843 verb1 •To catch or spear (fish) with a leister. formsleistered · leistering · leisters