sell

1 sell /ˈsɛl/ verb
sells; sold /ˈsoʊld/ ; selling
1 sell
/ˈsɛl/
verb
sells; sold /ˈsoʊld/ ; selling
Britannica Dictionary definition of SELL
1 
: to exchange (something) for money
[+ object]
[no object]
— opposite buy
2 
[+ object] : to make (something) available to be bought
3 
[no object] : to be able to be bought for a particular price — + for or at
4 
a  [no object] : to be bought by someone or by many people
b  [+ object] — used to say how many copies of something have been sold
5 
: to cause people to want to buy (something) : to cause the sale of (something)
[+ object]
[no object]
6 
[+ object] : to persuade someone to accept or approve of (something or someone)

sell a pup

— see pup

sell off

[phrasal verb]
sell (something) off or sell off (something)
: to sell (something) especially for a low price in order to get rid of it quickly or to get money that you need
— see also sell-off

sell on

[phrasal verb]
sell (someone) on (something)
: to persuade (someone) to be interested in and excited about (something)
— often used as (be) sold on

sell out

[phrasal verb]
1 
a  : to be bought until no more are available : to be entirely sold
b  : to sell the entire amount of something
c  be sold out : to have sold the entire amount of something
— often + of
d  sell (something) out or sell out (something) : to sell all of (something)
2 
: to sell all that you own of a business, company, etc.
3 
disapproving : to do something that does not agree with your beliefs, values, etc., especially in order to make money
4 
sell (someone) out or sell out (someone) informal : to do something that harms or causes trouble for (someone who trusted you) in order to get something for yourself : to betray (someone)
— see also sellout, sold-out

sell (someone) down the river

informal
: to do something that harms (someone who trusted you) especially in order to get something for yourself : to betray (someone)

sell (someone or something) short

: to put too low a value on the ability, importance, or quality of (someone or something)

sell up

[phrasal verb] British
: to sell your possessions, business, etc., especially so that you can move away

sell your body

: to accept money in exchange for sex

sell your soul (to the devil)

: to gain wealth, success, power, etc., by doing something bad or dishonest
2 sell /ˈsɛl/ noun
plural sells
2 sell
/ˈsɛl/
noun
plural sells
Britannica Dictionary definition of SELL
[count] chiefly US
: something that is sold — used to say that it is easy or difficult to get people to buy or accept something — usually singular
— see also hard sell, soft sell