(pathology) An inherited condition in which the exocrine glands produce abnormally viscous mucus, causing chronic respiratory and digestive problems.

(baseball) the outfield defensive player who stands in the middle of the field

(baseball) The outfield defensive player that stands to the left of the center fielder as viewed from home plate.

(baseball) The outfield defensive player that stands to the right of the field as viewed from home plate.

a network of interconnected glaciers or ice streams having a common source / a large expanse of floating ice (several miles long)

Alternative spelling of fiancée.

present participle of fiddle

action of the verb to fiddle

Of petty or trivial importance; footling

(chiefly British spelling) Alternative spelling of carbon fiber