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

 

caulk

 verb
verb
BrE BrE//kɔːk//
 
; NAmE NAmE//kɔːk//
 
Verb Forms present simple I / you / we / they caulk
BrE BrE//kɔːk//
 
; NAmE NAmE//kɔːk//
 
he / she / it caulks
BrE BrE//kɔːks//
 
; NAmE NAmE//kɔːks//
 
past simple caulked
BrE BrE//kɔːkt//
 
; NAmE NAmE//kɔːkt//
 
past participle caulked
BrE BrE//kɔːkt//
 
; NAmE NAmE//kɔːkt//
 
-ing form caulking
BrE BrE//ˈkɔːkɪŋ//
 
; NAmE NAmE//ˈkɔːkɪŋ//
 
Travelling by boat or ship
 
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caulk something to fill the holes or cracks in something, especially a ship, with a substance that keeps out water See related entries: Travelling by boat or ship Word Origin late Middle English (in the sense ‘copulate’, used of birds): from Old Northern French cauquer, caukier, variant of cauchier ‘tread, press with force’, from Latin calcare ‘tread’, from calx, calc- ‘heel’.