trench knife(redirected from Trench spike)
Also found in: Thesaurus.
Related to Trench spike: trench knife
(Arms & Armour (excluding Firearms)) a double-edged steel knife, often with a guard in the form of a knuckle-duster, designed for close combat
[C20: so called because such knives were carried by patrols in the Trenches during World War I]