Topic: HUMAN
| Date: | 1300-1400 |
| Language: | French |
| Origin: | Latin musculus 'little mouse, muscle, mussel', from mus 'mouse'; because a muscle moving looks like a mouse under the skin |
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mus‧cle1 S2 W3

1 [uncountable and countable]HB one of the pieces of flesh inside your body that you use in order to move, and that connect your bones together COLLOCATIONS 
arm/leg/neck/stomach etc muscles the muscles in your leg/arm/stomach etc strengthen/build up your muscles pull/strain a muscle (=injure a muscle) flex your muscles (=bend your arm muscles so that people can see how strong you are) muscle tissue/fibres (=the material that muscles are made of) muscle tone (=the firmness of your muscles )

arm/leg/neck/stomach etc muscles the muscles in your leg/arm/stomach etc strengthen/build up your muscles pull/strain a muscle (=injure a muscle) flex your muscles (=bend your arm muscles so that people can see how strong you are) muscle tissue/fibres (=the material that muscles are made of) muscle tone (=the firmness of your muscles )
3 [uncountable] power or influence
The agreement will give the UN some muscle to enforce human rights.
The agreement will give the UN some muscle to enforce human rights.4 [uncountable] physical strength and power :
put some muscle into it (=used to tell someone to work harder)
