Early 17th century; earliest use found in William Shakespeare (1564–1616), playwright and poet. From razor + -able. In later use perhaps partly also from razor + -able.
Definition of razorable in US English:
razorable
adjectiveˈreɪz(ə)rəbl
rare
Capable of being shaved; ready for shaving.
Origin
Early 17th century; earliest use found in William Shakespeare (1564–1616), playwright and poet. From razor + -able. In later use perhaps partly also from razor + -able.