beef

1 beef /ˈbiːf/ noun
plural beefs
1 beef
/ˈbiːf/
noun
plural beefs
Britannica Dictionary definition of BEEF
1 
[noncount] : meat from a cow
— often used before another noun
2 
[count] informal : complaint
3 
[noncount] informal : muscles
2 beef /ˈbiːf/ verb
beefs; beefed; beefing
2 beef
/ˈbiːf/
verb
beefs; beefed; beefing
Britannica Dictionary definition of BEEF
[no object] informal

beef up

[phrasal verb]
beef (something) up or beef up (something) informal
: to add weight, strength, or power to (something)