bite

1 bite /ˈbaɪt/ verb
bites; bit /ˈbɪt/ ; bitten /ˈbɪtn̩/ ; biting /ˈbaɪtɪŋ/
1 bite
/ˈbaɪt/
verb
bites; bit /ˈbɪt/ ; bitten /ˈbɪtn̩/ ; biting /ˈbaɪtɪŋ/
Britannica Dictionary definition of BITE
1 
of a person or animal
a  : to press down on or cut into (someone or something) with the teeth
[+ object]
— often + off
[no object]
— often + down, into, or through
b  of an insect or snake : to wound (someone) by pushing a stinger, fang, etc., into the skin
[+ object]
[no object]
— sometimes used figuratively
2 
[no object] : to grab and hold something without slipping — usually + into
3 
[no object]
a  of a fish : to take a fishhook and bait into the mouth and usually to get caught
b  somewhat informal : to respond to or accept something that is being offered
◊ Someone gets you to bite by offering something you want so that you will do something desired.
4 
[no object] chiefly British : to have a bad effect
5 
[no object] US slang, impolite : to be extremely bad

bite back

[phrasal verb] informal
1 
: to attack or criticize someone who has attacked or criticized you
— often + at
2 
bite back (something) or bite (something) back : to stop yourself from saying (something)

bite off more than you can chew

informal
: to try to do too much : to take on more responsibility than you can handle

bite someone's head off

informal
: to yell at someone or to be very critical of someone especially very suddenly and without a good reason

bite the bullet

informal
: to do something unpleasant or painful because it is necessary even though you would like to avoid it

bite the dust

informal
: to die or stop functioning

bite the hand that feeds you

informal
: to harm someone who has helped or supported you

bite your tongue

informal also bite your lip
: to not speak : to stop yourself from saying something that you are tempted to say
— often used as a command

come back to bite you

◊ If something that you do comes back to bite you, it causes problems for you at a later time.

hair of the dog that bit you

— see hair

once bitten, twice shy

◊ The expression once bitten, twice shy means that a person who has failed or been hurt when trying to do something is careful or fearful about doing it again.

— biter

noun, plural biters [count]
2 bite /ˈbaɪt/ noun
plural bites
2 bite
/ˈbaɪt/
noun
plural bites
Britannica Dictionary definition of BITE
1 
[count]
a  : an act of biting
b  : the way the upper and lower teeth come together
— see also overbite
2 
a  [count] : the amount of food eaten with a bite
b  [singular] informal : a small amount of food : a snack or a small informal meal
3 
[count] : a wound made by biting — see also snakebite
4 
[noncount] : a bad effect : a negative impact
5 
[noncount]
a  : a sharp feeling or taste
b  : a sharp quality in something written, spoken, or performed
◊ Something that has bite usually expresses criticism in a strong and often clever way.

your bark is worse than your bite

— see 2bark