nutcracker

n. instrument used to crack nutshells; type of bird related to the crow that eats nuts and seeds of the pine tree

A nutcracker consists of a mechanical device for cracking nuts. It works on the principle of moments as described in Archimedes' analysis of the lever. The ballet The Nutcracker derives its name from this festive holiday decoration.
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Noun
1. a compound lever used to crack nuts open
(synonym) nutcrackers
(hypernym) compound lever
2. any of various small short-tailed sharp-beaked birds that creep on trees and feed on small nuts and insects
(synonym) nuthatch
(hypernym) oscine, oscine bird
(hyponym) European nuthatch, Sitta europaea
(member-holonym) Sittidae, family Sittidae
3. speckled birds that feed on nuts
(hypernym) corvine bird
(hyponym) common nutcracker, Nucifraga caryocatactes
(member-holonym) Nucifraga, genus Nucifraga

(n.)
The American, or Clarke's, nutcracker (Picicorvus Columbianus) of Western North America.
  

(n.)
An instrument for cracking nuts.
  

(n.)
A European bird (Nucifraga caryocatactes), allied to the magpie and crow. Its color is dark brown, spotted with white. It feeds on nuts, seeds, and insects.
  

nutcracker /'nʌt,krækə/
danh từ, (thường) số nhiều cái kẹp quả hạch (động vật học) chim bổ hạt (họ quạ)nutcracker face: mặt có mũi và cằm nhọn; mặt có mũi và cằm gần nhau (do rụng hết răng)
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