(American spelling, biochemistry, steroids, pharmacology) A relatively weak natural estrogenic hormone that is a glycol C₁₈H₂₄O₃ found in the body chiefly as a metabolite of estradiol, is the main ...

(sports, slang) A round of golf.

(medicine) A condition caused by the presence of excess bile in the blood, sometimes leading to somnolence and coma.

plural of Birky