boot

1 boot /ˈbuːt/ noun
plural boots
1 boot
/ˈbuːt/
noun
plural boots
Britannica Dictionary definition of BOOT
1 
[count] : a covering usually of leather or rubber for the entire foot and the lower part of the leg
— see picture at shoe; see also booted, cowboy boot, hobnail boot, ski boot
2 
[count] : a forceful kick with the foot
3 
the boot informal : a sudden dismissal from a job
4 
[count] British : the trunk of a car
5 
[count] US : denver boot

as tough as old boots

— see 1tough

lick someone's boots

— see 1lick

the boot is on the other foot

— see 1foot

too big for your boots

— see 1big

to put the boot in

British, informal
1 
: to treat someone in a cruel or critical way
2 
: to kick someone again and again
2 boot /ˈbuːt/ verb
boots; booted; booting
2 boot
/ˈbuːt/
verb
boots; booted; booting
Britannica Dictionary definition of BOOT
1 
[+ object] : to kick (something) forcefully
2 
[+ object] informal
a  : to force (someone) to leave a place or situation
— often + out
b  : to dismiss (someone) suddenly from a job
3 
: to start a computer
[no object]
— often + up
[+ object]
— often + up — see also reboot
4 
[+ object] US : to lock a special device (called a Denver boot) onto one of the wheels of (a car) so that the car cannot be moved