collective pitch lever
a lever in a helicopter to change the angle of attack of all the rotor blades simultaneously, causing it to rise or descendCompare cyclic pitch lever
What Is A Collective Noun?First, what's a collective noun? And do you use a singular or plural verb with it? Let us break it down ...
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012