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

 

mortar

 verb
verb
BrE BrE//ˈmɔːtə(r)//
 
; NAmE NAmE//ˈmɔːrtər//
 
Verb Forms present simple I / you / we / they mortar
BrE BrE//ˈmɔːtə(r)//
 
; NAmE NAmE//ˈmɔːrtər//
 
he / she / it mortars
BrE BrE//ˈmɔːtəz//
 
; NAmE NAmE//ˈmɔːrtərz//
 
past simple mortared
BrE BrE//ˈmɔːtəd//
 
; NAmE NAmE//ˈmɔːrtərd//
 
past participle mortared
BrE BrE//ˈmɔːtəd//
 
; NAmE NAmE//ˈmɔːrtərd//
 
-ing form mortaring
BrE BrE//ˈmɔːtərɪŋ//
 
; NAmE NAmE//ˈmɔːrtərɪŋ//
 
 
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[intransitive, transitive] mortar (somebody/something) to attack somebody/something using a mortar Word Originverb late Old English, from Old French mortier, from Latin mortarium (to which the English spelling was later assimilated).
See the Oxford Advanced American Dictionary entry: mortar