1 (of birds) to maintain (feathers) in a healthy condition by arrangement, cleaning, and other contact with the bill
2 to dress or array (oneself) carefully; primp
3 usually foll by: on to pride or congratulate (oneself)
(C14 preinen, probably from prunen to prune3, influenced by prenen to prick, pin (see preen2); suggestive of the pricking movement of the bird's beak)
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