fucke 'op
— Verb
– Danish
~ blive uanvendelig; gå i stykker; give problemer
fire opal
— Noun
– English
~ an opal with flaming orange and yellow and red colors
fall open
— Verb
– English
~ open involuntarily; "His mouth dropped open"; "Her jaw dropped"
fly open
— Verb
– English
~ come open suddenly; "the doors flew open in the strong gust"
field of operation
— Noun
– English
~ a particular kind of commercial enterprise; "they are outstanding in their field"
fixed-cycle operation
— Noun
– English
~ an operation that is completed in a specified number of regularly timed execution cycles
field of operations
— Noun
– English
~ a region in which active military operations are in progress; "the army was in the field awaiting action"; "he served in the Vietnam theater for three years"