WordNet sense 1 (something (often something deceptively attractive) that catches you unawares):

trap

WordNet sense 2 (a small drum with two heads and a snare stretched across the lower head):

snare drum, side drum

WordNet sense 3 (a trap for birds or small mammals; often has a slip noose):

gin, noose

WordNet sense 4 (catch in or as if in a trap):

ensnare, entrap, trammel

WordNet sense 5 (entice and trap):

hook