knuckle

n.

（指人）指关节；（指动物）膝关节，肘；铰结，肘形接；铜指节套

vt.

用指关节打、压、碰、擦；

复数：knuckles过去式：knuckled过去分词：knuckled现在分词：knuckling第三人称单数：knuckles

steering knuckle转向关节

knuckle down屈服；开始认真工作

near the knuckle[口语](笑话等)近乎猥亵的，近乎下流的，近乎粗鄙的

knuckle sandwich对准嘴的一拳

1. Our fingers bend at the knuckle.
   我们的手指在指关节处弯曲。
2. Guidry had the 1 of the best sliders ever and should teach him, and Moose should teach him the Knuckle curve.
   古得利已经有了史上最厉害的滑球，必须要好好传授他，然后轮到穆西纳，也必须要教他指关节区球。

1. It's time to knuckle down to work.
   该开始努力工作了。

Finger-knuckle-print: a new biometric identifier
Knuckle-walking and the evolution of hominoid hands (p 171-206)
Online finger-knuckle-print verification for personal authentication
Evidence that humans evolved from a knuckle-walking ancestor
Origin of human bipedalism: The knuckle-walking hypothesis revisited
Phase congruency induced local features for finger-knuckle-print recognition
Personal authentication using hand vein triangulation and knuckle shape.
Two amino acids within the knuckle of the first zinc finger specify DNA response element activation by the glucocorticoid receptor
Process for forming absorbent paper by imprinting a fabric knuckle pattern thereon prior to drying and paper thereof
Activation of osteo-progenitor cells by a novel synthetic peptide derived from the bone morphogenetic protein-2 knuckle epitope