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oilman
oilseed
oilskin
oilstone
oily
oink
ointment
Oireachtas
OIRO
Oise
Oita
OJ
ojas
Ojibwa
OJT
OK (1)
OK (2)
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oil trap
oil trap (plural oil traps)


noun 
Definition:
 
blockage holding oil or gas: a set of conditions within rock strata that blocks the upward movement of oil or gas, causing it to accumulate
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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