2 N‑UNCOUNT [oft on N , N n] In tennis, matches played on clay are played on courts whose surface is covered with finely crushed stones or brick. □ He was a clay-court specialist who won Wimbledon five times.
cla y pi |geon (clay pigeons ) N‑COUNT [usu N n] Clay pigeons are discs of baked clay which are thrown into the air by a machine as targets for gun shooting practice. □ …hunting and clay-pigeon shooting.
clean ◆◆◇ /kliː n/ (cleaner , cleanest , cleans , cleaning , cleaned )
1 ADJ Something that is clean is free from dirt or unwanted marks. □ He wore his cleanest slacks, a clean shirt and a navy blazer. □ Disease has not been a problem because clean water is available. □ The metro is efficient and spotlessly clean.
2 ADJ You say that people or animals are clean when they keep themselves or their surroundings clean.
3 ADJ A clean fuel or chemical process does not create many harmful or polluting substances. □ Fans of electric cars say they are clean, quiet and economical. ● clean|ly ADV [ADV after v] □ Manufacturers are working with new fuels to find one that burns more cleanly than petrol.
4 VERB If you clean something or clean dirt off it, you make it free from dirt and unwanted marks, for example by washing or wiping it. If something cleans easily, it is easy to clean. □ [V n] Her father cleaned his glasses with a paper napkin. □ [V n prep/adv] It took half an hour to clean the orange powder off the bath. □ [V adv] Wood flooring not only cleans easily, but it's environmentally friendly into the bargain. ● N‑SING Clean is also a noun. □ Give the cooker a good clean.
5 VERB If you clean a room or house, you make the inside of it and the furniture in it free from dirt and dust. □ [V ] My parents cooked and cleaned. □ [V n] She got up early and cleaned the flat. ● clean|ing N‑UNCOUNT □ I do the cleaning myself.
6 ADJ If you describe something such as a book, joke, or lifestyle as clean , you think that they are not sexually immoral or offensive. [APPROVAL ] □ They're trying to show clean, wholesome, decent movies. □ Flirting is good clean fun.
7 ADJ If someone has a clean reputation or record, they have never done anything illegal or wrong. □ Accusations of tax evasion have tarnished his clean image. □ You can hire these from most car hire firms, provided you have a clean driving licence.
8 ADJ [usu ADJ n] A clean game or fight is carried out fairly, according to the rules. □ He called for a clean fight in the election and an end to 'negative campaigning'. ● clean|ly ADV [ADV after v, ADV -ed] □ The game had been cleanly fought.
9 ADJ [usu ADJ n] A clean sheet of paper has no writing or drawing on it. □ Take a clean sheet of paper and down the left-hand side make a list.
10 ADJ [ADJ n] If you make a clean break or start, you end a situation completely and start again in a different way. □ She wanted to make a clean break from her mother and father.
11 ADV [oft ADV before v] Clean is used to emphasize that something was done completely. [INFORMAL , EMPHASIS ] □ It burned clean through the seat of my overalls. □ I clean forgot everything I had prepared.
12 ADJ [usu ADJ n] You can describe an action as clean to indicate that it is carried out simply and quickly without mistakes. □ They were more concerned about the dogs' welfare than a clean getaway. ● clean|ly ADV [ADV after v, ADV -ed] □ I struck the ball cleanly and my shot was on target.
13 PHRASE If you come clean about something that you have been keeping secret, you admit it or tell people about it. [INFORMAL ] □ [+ about ] It would be better if you come clean about it and let her know what kind of man she is seeing. [Also + on ]
14 to clean up your act → see act
15 to keep your nose clean → see nose
16 a clean slate → see slate
17 to wipe the slate clean → see slate
18 a clean sweep → see sweep
19 clean as a whistle → see whistle
▸ clean out
1 PHRASAL VERB If you clean out something such as a cupboard, room, or container, you take everything out of it and clean the inside of it thoroughly. □ [V P n] Mr. Wall asked if I would help him clean out the bins. □ [V n P ] If you are using the same pan, clean it out.
2 PHRASAL VERB If someone cleans you out , they take all the money and valuables you have. If they clean out a place, they take everything of value that is in it. [INFORMAL ] □ [V n P ] They cleaned me out. I need to go to a cashpoint. □ [V P n] When they first captured the port, they virtually cleaned out its warehouses.
▸ clean up
1 PHRASAL VERB If you clean up a mess or clean up a place where there is a mess, you make things tidy and free of dirt again. □ [V P n] Police in the city have been cleaning up the debris left by a day of violent confrontation. □ [V P ] Nina and Mary were in the kitchen, cleaning up after dinner. [Also V n P ]
2 PHRASAL VERB To clean up something such as the environment or an industrial process means to make it free from substances or processes that cause pollution. □ [V P n] Under pressure from the public, many regional governments cleaned up their beaches. [Also V n P ]