weth·er 
(wĕthər)
(wĕthər)n.
A castrated male sheep or goat.
[Middle English, from Old English; see wet-2 in the Appendix of Indo-European roots.]
- bio-
- bioaccumulation
- bioaccumulative
- bioacoustics
- bioactive
- bioactivity
- bioassay
- bioastronautical
- bioastronautics
- bioavailability
- bioavailable
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- bio-bibliography
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- biocatalyst
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- biocenology
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- biochem
- biochemical
- biochemically
- biochemical oxygen demand
- biochemist