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

 

fatten

 verb
verb
BrE BrE//ˈfætn//
 
; NAmE NAmE//ˈfætn//
 
Verb Forms present simple I / you / we / they fatten
BrE BrE//ˈfætn//
 
; NAmE NAmE//ˈfætn//
 
he / she / it fattens
BrE BrE//ˈfætnz//
 
; NAmE NAmE//ˈfætnz//
 
past simple fattened
BrE BrE//ˈfætnd//
 
; NAmE NAmE//ˈfætnd//
 
past participle fattened
BrE BrE//ˈfætnd//
 
; NAmE NAmE//ˈfætnd//
 
-ing form fattening
BrE BrE//ˈfætnɪŋ//
 
; NAmE NAmE//ˈfætnɪŋ//
 
Animal farming
 
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[transitive, intransitive] fatten (somebody/something) (up) to make somebody/something fatter, especially an animal before killing it for food; to become fatter The piglets are taken from the sow to be fattened for market. She's very thin after her illness—but we'll soon fatten her up. See related entries: Animal farmingWord Familyfat adjectivefatty adjectivefatten verbfattening adjective
See the Oxford Advanced American Dictionary entry: fatten