razorblade

or ra·zor blade

[ rey-zer-bleyd ]
/ ˈreɪ zərˌbleɪd /

noun

a sharp-edged metal blade for use in a razor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for razor blade

razor blade


noun

a small rectangular piece of metal sharpened on one or both long edges for use in a razor for shaving
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012