Middle (5)
'middle' is the definition.
(I know that middle can be written as centre)
This is the entire clue.
(Other definitions for centre that I've seen before include "Point equidistant from all other points" , "Nucleus" , "'Things fall apart; the ... cannot hold'/Yeats" , "Pair of facing pages in the middle of a magazine" , "Midpoint" .)
'middle' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for central that I've seen before include "Middle; crucial" , "like this answer" , "Focal" , "Key" , "Near the middle" .)
'middle' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for abdomen that I've seen before include "Insect's body part" , "4 part of insect" , "Bodily region" , "A main part of the body" , "Midriff" .)
'middle' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for waist that I've seen before include "Middle part of a ship" , "Spare tyre location?" , "Narrow part of body" , "Central part of body" , "Middle of trunk" .)
'middle' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for midst that I've seen before include "In the middle of (archaic or literary)" , "Where one is surrounded by other things" , "Blue dye; rainbow hue" , "Centre" , "Central part" .)
'middle' is the definition.
(core can mean the centre of something)
This is all the clue.
(Other definitions for core that I've seen before include "The centre part, as of an apple" , "Crux" , "Inmost part" , "The centre of an object" , "Heal" .)