lav-, lava-, lavat- +

Without washing; unwashed.

Irrigation of the main sinus (passageway of the nose) through its natural opening or through a puncture of the lower canal or passage.

The introduction of serum to the blood based on the outmoded belief that it would dilute noxious substances.

A technique for obtining cells from bronchioles and alveoli of the lungs by instillation of sterile fluid through a fiberoptic bronchoscope into a lobe and subsequent removal by suction. The technique may be of diagnostic value or be used to evaluate the effectiveness of treatment.

To wash out, to wash clean.

The obsolete practice of washing of the peritoneal cavity with ether as a treatment of acute intra-abdominal or pelvic infections.

1. A procedure used to remove the contents of the stomach by washing it out; for example, after ingestion or swallowing a toxic (poisonous) substance: "Gastric lavage is performed by placing the patient down with his or her head below the level of the stomach and turned to one side; then a lubricated tube is passed down the esophagus into the stomach and a funnel is attached to the top and water is poured into it until the stomach is filled."

"The top of the tube is then lowered, allowing the fluid in the stomach to drain into a bucket and this lavage is repeated until the water shows up clear."

A form of dialysis in which fluids are instilled and withdrawn in the small intestine in order to remove waste products from the blood across the intestinal mucosa.

Usually white, made by rapidly stirring soap and water resulting in small bubbles or foam: "When the girl washes her hair, she uses warm water and applies shampoo and then she massages it into a rich lather."
2. Etymology: from Greek, louein, "to bathe" then from Latin lavere, "to wash".

"In old English, this term was recorded as meaning, "washing soda", and the modern meaning of "soap bubbles" came into existence in about the late 16th century."

A white mass of bubbles that is produced with a mixture of soap and water: "He lathered his face with shaving cream which softened his three-day beard before shaving it off."

A reference to that which has been made into a foam or a lot of bubbles, used for washing and cleansing: "Her lathered hair was being rinsed and would be dried and styled by the beautician."

Those who use soap or a similar cleansing substance to clean their hair, hands, and bodies: "The football latherers, or team members, were lathering themselves under the showers after the hard-fought game."

A description of something that is covered with foamy liquid or other bathing soap: "He rubbed his lathery hair and he was about to rinse off the shampoo under the shower."

Bathroom or toilet graffiti: Using words that are only fit for a latrine wall.

1. A toilet or something used as a toilet, as a trench in the earth; especially, in a military camp, or bivouac area.
2. A public toilet in a military area.
3. Etymology: first recorded about 1297, from Latin latrina, contraction of lavatrina, "washbasin, washroom", from lavatus, past participle of lavare, "to wash" + -trina, a suffix denoting "workplace".

Its reappearance in 1642 is probably a re-borrowing from French; especially, of a privy of a camp, barracks, college, hospital, etc. Latrine rumor, "baseless gossip" (of the kind that spreads in conversations in latrines) is military slang, first recorded in about 1918.