Term: nictitating membrane: a protective fold of skin in the eyes of reptiles and birds and some mammals
Broader: protective fold: a flap of tissue that protects what it covers | Unrelated: engineer: the operator of a railway locomotive
Broader: protective fold: a flap of tissue that protects what it covers | Unrelated: press conference: a conference at which press and tv reporters ask questions of a politician or other celebrity
Broader: protective fold: a flap of tissue that protects what it covers | Unrelated: gasterophilidae: horse botflies
Broader: protective fold: a flap of tissue that protects what it covers | Unrelated: graining: a texture like that of wood
Broader: protective fold: a flap of tissue that protects what it covers | Unrelated: ugliness: qualities of appearance that do not give pleasure to the senses
Broader: protective fold: a flap of tissue that protects what it covers | Unrelated: day school: a school giving instruction during the daytime
Broader: protective fold: a flap of tissue that protects what it covers | Unrelated: coolant system: a cooling system that uses a fluid to transfer heat from one place to another
Broader: protective fold: a flap of tissue that protects what it covers | Unrelated: seduction: enticing someone astray from right behavior
Broader: protective fold: a flap of tissue that protects what it covers | Unrelated: criticism: a serious examination and judgment of something
Broader: protective fold: a flap of tissue that protects what it covers | Unrelated: gun muzzle: the open circular discharging end of a gun