The Clue
Source of cork (3 letter answer)
The Answer
OAK
Tags
Notes
The answer OAK is seen frequently, appearing about once every 100 puzzles.
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Definition
OAK as a noun:
1. the hard durable wood of any oak; used especially for furniture and flooring
2. (oak, oak tree) = a deciduous tree of the genus Quercus; has acorns and lobed leaves; "great oaks grow from little acorns"