A container for carrying arrows or bolts

• Usually worn on the back, belt, or bow

A ready stock of tactics, arguments, or resources

• Figurative extension from the arrow container

To shake slightly with rapid, tremulous motion

• Often from cold, fear, or emotion

A collective noun for cobras

A directed multigraph used in representation theory

• Vertices and arrows encode relations between modules

Nimble; active

• Archaic