chip (sth) in

chip in phrasal verb (see also ↑chip)
1. to interrupt a conversation by saying something that adds more detail
chip in with
Other committee members chipped in with suggestions.
‘It won’t be easy,’ Jeff chipped in.
I’d just like to chip in, Bill, if I might.
2. if each person in a group chips in, they each give a small amount of money so that they can buy something together:
We all chipped in to buy Amy a graduation present.
chip in (with) something
Fifty-two people in the music industry each chipped in $250 apiece.

Oxford Advanced Learner's Dictionary

chip in (with something)

ˌchip ˈin (with sth) derived

(informal)

1. to join in or interrupt a conversation; to add sth to a conversation or discussion
• Pete and Anne chipped in with suggestions.

• + speech ‘That's different,’ she chipped in.

2. (also ˌchip ˈin sth) to give some money so that a group of people can buy sth together
Syn: contribute
• If everyone chips in we'll be able to buy her a really nice present.
• We each chipped in (with) £5.

Main entry: chip_derived

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition

chip (sth) in informal — phrasal verb with chip / tʃɪp / verb [ I or T ] ( -pp- )

C2 to give some money when several people are giving money to pay for something together:

They all chipped in £100 and bought their mother a trip to Greece.

Collins Advanced Learner’s English Dictionary

chip in

1) PHRASAL VERB When a number of people chip in, each person gives some money so that they can pay for something together. [INFORMAL]
  [V P] They chip in for the petrol and food...
  [V P n (not pron)] The brothers chip in a certain amount of money each month to hire a home health aide. [Also V P with n]
  Syn:
  contribute
2) PHRASAL VERB If someone chips in during a conversation, they interrupt it in order to say something. [INFORMAL]
  [V P with quote] `That's true,' chipped in Quaver...
  [V P] He chipped in before Clements could answer.

Merriam-Webster's Advanced Learner's Dictionary

chip in [phrasal verb]
1 chip in or chip in (something) : to give something (such as money) to help a person, group, or cause
• We all chipped in [=contributed] to buy him a gift.
• If we all chip in [=help (out)], the work will get done quickly.
• We each chipped in 10 dollars.
2 chiefly Brit : to add your comment or opinion to a conversation or discussion
• “He left hours ago,” Sue chipped in. [=chimed in]