Shout 'Vamoose!' -- coyote's tail gets trapped (6)
I believe the answer is:
scream
'shout' is the definition.
(scream is a kind of shout)
'vamoose coyote's tail gets trapped' is the wordplay.
'vamoose' becomes 'scram' (I've seen this before).
'tail' says to take the final letters.
'gets trapped' indicates putting letters inside.
The last letter of 'coyote' is 'e'.
'scram' placed around 'e' is 'SCREAM'.
(Other definitions for scream that I've seen before include "Call for" , "painting" , "Utter a sudden loud cry" , "Comic" , "Hoot - yell in pain" .)