(mining, historical) A boy employed to assist the barrowman out of a dip place.

One who is helped.

plural of helpee

(idiomatic) A plunger, consisting of a large suction cup attached to a stick and used to remove blockages from toilets, sinks, or drains.

(informal) One who works on a helpdesk.

plural of helpdesker

Synonym of service dog

plural of T helper cell

(immunology) A subtype of T cell that helps the activity of other immune cells by releasing cytokines, playing an important role in the adaptive immune system.

(immunology) A helper T cell.