(idiomatic, informal) A level of effort beyond what one can usually sustain; great exertion.

Fitting its definition precisely. / Having all of its parts in harmony with a common purpose. / Without fault or mistake; thoroughly skilled or talented. / Excellent and delightful in all respects.

(grammar) The perfect tense, or a form in that tense. / (video games) A perfect score; the achievement of finishing a stage or task with no mistakes.

(transitive) To make perfect; to improve or hone. / (law) To take an action, usually the filing of a document in the correct venue, that secures a legal right.

A medium-sized, very swift falcon, Falco peregrinus, that hunts small birds.

Any of the three species of spiny-finned freshwater fish in the genus Perca. / (South Africa) Acanthopagrus berda / (Ghana) Distichodus engycephalus, Distichodus rostratus

A rod, staff, tree branch, ledge, etc., used as a roost by a bird. / A pole connecting the fore gear and hind gear of a spring carriage; a reach.

(intransitive) To rest on a perch (especially, of a bird); to roost. / (intransitive) To sit upon the edge of something. / (intransitive) To stay in an elevated position.

(law) A fictional person used as a comparative legal standard to represent an average member of society and how he or she would behave or think, especially in determining negligence; sometimes formulated as "a person of ordinary prudence exercising due care in like circumstances."

The organisation, identification and interpretation of sensory information. / Conscious understanding of something. / Vision (ability) / Acuity