patter

Short definition from Wiktionary

Noun

1. 1
   A soft repeated sound, as of rain falling, or feet walking on a hard surface.
2. 2
   Glib and rapid speech, such as from an auctioneer or a sports commentator.
3. 3
   One who pats.

Verb

1. 1
   To make irregularly repeated sounds of low-to-moderate magnitude and lower-than-average pitch.
2. 2
   To spatter; to sprinkle.
3. 3
   To speak glibly and rapidly, as does an auctioneer or a sports commentator.
4. 4
   To repeat the Lord's Prayer.
5. 5
   To pray.
6. 6
   To repeat hurriedly; to mutter.