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twinight double-header
twinkle
twinkling
twinned
Twins
twirl
twirp
twist
twist drill
twist grip
twist-tie
twisted
twister
twistor
twistor theory
twit
twitch
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twist drill
twist drill (plural twist drills)


noun 
Definition:
 
grooved drill bit: a drill bit with one or more helical grooves along its axis to expel cuttings or swarf
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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