The sucking organ or proboscis of an insect or crustacean.‘It is about 4-5 cm long, and has a kind of ‘hook’ at the head, which is where the moth's tongue, or haustella, is formed.’
- ‘Adult mouthparts are reduced, with mandibles essentially absent, but the maxillary and labial palps, and often the haustellum, are prominent.’
- ‘The feeding structures of lice are complex, including the haustellum, a proboscis-like tube with teeth, which is used to pierce the host's skin.’
Early 19th century modern Latin diminutive of haustrum ‘scoop’, from haust- ‘drawn in’, from the verb haurire.
Are You Learning English? Here Are Our Top English Tips