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nocturnal
nocturne
nocuous
nod
nod off
nod out
nod through
nodal tachycardia
nodding donkey
noddle
noddy
noddy suit
node
node of Ranvier
nodose
nodule
Noel
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nodding donkey

nod·ding don·key [ nòdding dáwngkee, nòdding dóngkee ] (plural nod·ding don·keys)


noun 
Definition:
 
oil extraction device: a reciprocating pump for extracting oil

[<donkey "small pump or engine"; because it moves backward and forward]
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