bar·bi·cel 
(bärbĭ-sĕl′)
(bärbĭ-sĕl′)n.
One of the minute, hooked projections extending from and interlocking the barbules of a feather.
[New Latin barbicella, diminutive of Latin barba, beard; see bhardh-ā- in the Appendix of Indo-European roots.]