The sac in which the foetus develops in mammals, reptiles and birds.

(anatomy) A membranous sac attached to an embryo, providing early nourishment in the form of yolk in bony fishes, sharks, reptiles, birds, and primitive mammals.

(colloquial, baseball) A sacrifice bunt.

plural of sac bunt

The megagametophyte in a flowering plant.

Abbreviation of salary sacrifice.

Abbreviation of saccharum lactis.

(UK, law, historical) The right of a lord to hear and decide legal cases on his estate without recourse to other courts.

(medicine) The intrauterine structure around an embryo in the very early stage of a fetus that can be used to determine if an intrauterine pregnancy exists until the embryo is identified.

Alternative form of gestational sac