patter

US /ˈpæt̬.ɚ/
UK /ˈpæt̬.ɚ/
1.

vỗ về

continuous and sometimes funny speech or talk, especially used by someone trying to sell things or by an entertainer:

:
He should succeed - he dresses well and his sales patter is slick and convincing.
1.

vỗ về

to make the sound of lots of things gently and repeatedly hitting a surface:

:
I heard the rain patter against/on the window.