bom·bil·la 
(bŏm-bēyə)
(bŏm-bēyə)n.
A metal straw having a bulbous end perforated with holes that filters out mate leaves when drinking mate from a calabash.
[American Spanish, from diminutive of Spanish bomba, pump, from Latin bombus, a booming sound; see BOMB.]
bombillabombilla (foreground) and mate cup(background)