feast one's eyes
— Verb
– English
～ look at with great enjoyment; "She feasted her eyes on the Tuscan landscape"
feather one's nest
— Verb
– English
～ enrich oneself by taking advantage of one's position; "The congressmen feathered his nest through his connection with big business"
flip one's lid
— Verb
– English
～ get very angry and fly into a rage; "The professor combusted when the student didn't know the answer to a very elementary question"; "Spam makes me go ballistic"
find oneself
— Verb
– English
～ accept and make use of one's personality, abilities, and situation; "My son went to Berkeley to find himself"
flowering onion
— Noun
– English
～ European onion with white flowers
form-only
— Adjective
– English
～ being a matter of form only; lacking substance; "a form-only requirement that is usually ignored"
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"