Definition of silk gland
: a gland that produces a viscid fluid which is extruded in filaments and hardens into silk on exposure to air: such as
a
: either of a pair of greatly enlarged and modified salivary glands of an insect larva that produce a compound filament from which a larval or pupal cover (such as a cocoon) is spun
b
: any of two or more abdominal glands of a spider that open through spinnerets and produce a filament used chiefly in the spinning of webs
