mentally or physically infirm with age

noun

lacking bodily or muscular strength or vitality

Hence The juice or fluid the presence of which in anything is characteristic of a healthy, fresh, or vigorous condition; blood, A quarryman's name for rock which is partially decayed and which exhibits this quality by iron stains and other discolorations. It is usually thrown away, The juice of plants of any kind, especially the ascending and descending juices or circulating fluid essential to nutrition, intransitive verb_ To undermine the foundations of (a fortification), To dig a sap, To proceed by mining, or by secretly undermining; to execute saps, transitive verb_ To subvert by digging or wearing away; to mine; to undermine; to destroy the foundation of, To make unstable or infirm; to unsettle; to weaken, military To pierce with saps, verb_ To make unstable or infirm; to unsettle; to weaken

A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health who is unable to care for himself, Any person with a disability, verb_ force to retire, remove from active duty, as of firemen, injure permanently, transitive verb_ To make or render invalid or infirm, To classify or enroll as an invalid, someone who is incapacitated by a chronic illness or injury, One who is confined to home or bed because of illness, disability or injury

Supplying or taking nourishment from, or as from, the breast, In the state of suckling young, lactating, Referring to nurses, noun_ breastfeeding, The process or profession of caring for patients as a nurse, the work of caring for the sick or injured or infirm, verb_ Present participle of nurse

One who nourishes; a person who supplies food, tends, or brings up; as_ (a) A woman who has the care of young children; especially, one who suckles an infant not her own. (b) A person, especially a woman, who has the care of the sick or infirm, Hence, one who or that which nurtures, trains, cherishes, or protects, n A person trained to provide medical care for the sick or disabled, especially one who is licensed and works in a hospital or physician's office, intransitive verb_ To cause or allow to take milk from the breast, To try to cure by special care or treatment, To consume slowly, especially in order to conserve, transitive verb_ To nourish; to cherish; to foster, To nourish at the breast; to suckle; to feed and tend, as an infant