e/Echo machine

Information
has gloss	eng: An echo machine is the early name for a sound processing device used with electronic instruments to repeat the sound and produce a simulated echo. The device was popular with guitarists and was used by Brian May, Jimmy Page and Syd Barrett among others. Nowadays it would normally be called a Delay or Echo.
lexicalization	eng: echo machine
instance of	(noun) an effect that imitates a sound called for in the script of a play sound effect