more literary or poetic; often used in phrases like 'mop your brow' or 'furrow your brow'
Synonym discussion
Sense: noun/1
Forehead is the everyday word for the area of the face between the eyebrows and the hair. Brow is a more literary or poetic term for the same area, often used in fixed expressions like 'furrow your brow' (to frown), 'mop your brow' (to wipe sweat away), or 'raise an eyebrow' (to express surprise). Temple refers to the side of the forehead, above the cheekbone on each side — it is a smaller specific area, not a substitute for the whole forehead. In everyday speech, say 'I bumped my forehead' (not 'my brow' or 'my temple') unless you mean the specific side part.
Forehead comes from Old English 'foran' (meaning 'before' or 'in front') and 'hēafod' (meaning 'head'). So the forehead is literally the 'front of the head'. The 'fore-' prefix still carries this meaning of 'front part' in other words like forearm and forefront.