English

Definition of hallmark verb from the Oxford Advanced Learner's Dictionary

 

hallmark

 verb
verb
BrE BrE//ˈhɔːlmɑːk//
 
; NAmE NAmE//ˈhɔːlmɑːrk//
 
Verb Forms present simple I / you / we / they hallmark
BrE BrE//ˈhɔːlmɑːk//
 
; NAmE NAmE//ˈhɔːlmɑːrk//
 
he / she / it hallmarks
BrE BrE//ˈhɔːlmɑːks//
 
; NAmE NAmE//ˈhɔːlmɑːrks//
 
past simple hallmarked
BrE BrE//ˈhɔːlmɑːkt//
 
; NAmE NAmE//ˈhɔːlmɑːrkt//
 
past participle hallmarked
BrE BrE//ˈhɔːlmɑːkt//
 
; NAmE NAmE//ˈhɔːlmɑːrkt//
 
-ing form hallmarking
BrE BrE//ˈhɔːlmɑːkɪŋ//
 
; NAmE NAmE//ˈhɔːlmɑːrkɪŋ//
 
 
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hallmark something to put a hallmark on metal goods Word Origin early 18th cent. (as a noun): from Goldsmiths' Hall in London, where articles were tested and stamped with such a mark.
See the Oxford Advanced American Dictionary entry: hallmark