sticking plaster
noun
[ ˈstɪkɪŋ ˌplɑːstə ]
• a piece of flexible material with an adhesive backing for covering cuts or small wounds.
plaster
noun
• a soft mixture of sand and cement and sometimes lime with water, for spreading on walls, ceilings, or other structures, to form a smooth hard surface when dried.
• "strip away the plaster to expose the bare brick"
• an adhesive strip of material for covering cuts and wounds.
• "waterproof plasters"
Origin:
Old English, denoting a bandage spread with a curative substance, from medieval Latin plastrum (shortening of Latin emplastrum, from Greek emplastron ‘daub, salve’), later reinforced by the Old French noun plastre . Sense 1 dates from late Middle English.