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The Collaborative International Dictionary
Haustella

Haustellum \Haus*tel"lum\ (h[add]s*t[e^]l"l[u^]m), n.; pl. Haustella (-l[.a]). [NL.] (Zo["o]l.) The sucking proboscis of various insects. See Lepidoptera, and Diptera.

WordNet
haustella