clip-on
— Noun
– English
～ a device (as an earring, sunglasses, microphone etc.) that is attached by clips
cool one's heels
— Verb
– English
～ wait or pass the time aimlessly or futilely; be kept waiting; "She kicked her heels for hours at the gate of the Embassy"
cash in one's chips
— Verb
– English
～ pass from physical life and lose all bodily attributes and functions necessary to sustain life; "She died from cancer"; "The children perished in the fire"; "The patient went peacefully"; "The old guy kicked the bucket at the age of 102"
catch one's breath
— Verb
– English
～ take a short break from one's activities in order to relax
cross oneself
— Verb
– English
～ make the sign of the cross; in the Catholic religion
climbing onion
— Noun
– English
～ much-branched leafless twining South African herb cultivated as an ornamental for its bright green stems growing from large aboveground bulbs
class Onychophora
— Noun
– English
～ enigmatic small elongated wormlike terrestrial invertebrates of damp dark habitats in warm regions; distinct from the phylum Annelida; resemble slugs with legs and are sometimes described as the missing link between arthropods and annelids
class Oomycetes
— Noun
– English
～ nonphotosynthetic fungi that resemble algae and that reproduce by forming oospores; sometimes classified as protoctists
co-op
— Noun
– English
～ a jointly owned commercial enterprise (usually organized by farmers or consumers) that produces and distributes goods and services and is run for the benefit of its owners
click open
— Verb
– English
～ open with a clicking sound; "These keys have clicked open many doors"
cap opener
— Noun
– English
～ a bottle opener to pry off caps
can opener
— Noun
– English
～ a device for cutting cans open
chess opening
— Noun
– English
～ a recognized sequence of moves at the beginning of a game of chess; "he memorized all the important chess openings"
comic opera
— Noun
– English
～ opera with a happy ending and in which some of the text is spoken
coin-operated
— Adjective
– English
～ of devices that do not operate without the prior insertion of one or more coins; "a coin-operated telephone"
chief operating officer
— Noun
– English
～ the corporate executive responsible for the operations of the firm; reports to a board of directors; may appoint other managers (including a president)
clandestine operation
— Noun
– English
～ an intelligence operation so planned and executed as to insure concealment
combined operation
— Noun
– English
～ a military operation carried out cooperatively by two or more allied nations or a military operation carried out by coordination of sea, land, and air forces
control operation
— Noun
– English
～ an operation that controls the recording or processing or transmission of interpretation of data; "a control operation started the data processing"
concurrent operation
— Noun
– English
～ two or more operations performed at the same time (or within a give interval)