The Collaborative International Dictionary of English v.0.48:
Valvule \Valv"ule\, n. [Cf. F. valvule.] [1913 Webster] 1. A little valve; a valvelet. [1913 Webster] 2. (Zool.) A small valvelike process. [1913 Webster]WordNet (r) 3.0 (2006):
valvule n 1: a small valve [syn: valvule, valvelet, valvula]