Background echoes, from clouds etc., on a radar or sonar screen.
A confused disordered jumble of things.
To utter words hurriedly, especially (but not exclusively) as a speech disorder (compare cluttering).
To fill something with clutter.
To make a confused noise; to bustle.
To remove or clear a block or obstruction from.
In whist, to throw away a high card so as not to interrupt one's partner's long suit.
To free or make available.
To enable communication again, via telephone, instant messaging, etc., with (somebody previously blocked).
The removal of a block or blockage.