fipple
Concise Oxford English Dictionary © 2008 Oxford University Press:
fipple /ˈfɪp(ə)l/
▶noun the mouthpiece of a recorder or similar wind instrument which is blown endways, in which a thin channel cut through a block directs a stream of air against a sharp edge.
– origin C17: perh. rel. to Icelandic flipi ‘horse's lip’.
'fipple' also found in these Oxford entries:
