The Collaborative International Dictionary of English v.0.48:

Claver \Clav"er\, n. [Obs.]
   See Clover. --Holland.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Claver \Clav"er\, n.
   Frivolous or nonsensical talk; prattle; chattering. [Scot. &
   North of Eng.]
   [1913 Webster]

         Emmy found herself entirely at a loss in the midst of
         their clavers.                           --Thackeray.
   [1913 Webster]

WordNet (r) 3.0 (2006):

claver
    v 1: talk socially without exchanging too much information; "the
         men were sitting in the cafe and shooting the breeze" [syn:
         chew the fat, shoot the breeze, chat, confabulate,
         confab, chitchat, chit-chat, chatter, chaffer,
         natter, gossip, jaw, claver, visit]