1. v. & adj.
--v.tr. raise (one's head etc.) briskly.
--adj. perky; pert.
Phrases and idioms:
perk up
1. recover confidence, courage, life, or zest.
2 restore confidence or courage or liveliness in (esp. another person).
3 smarten up.
Etymology: ME, perh. f. var. of PERCH(1) 2. n. Brit. colloq. a perquisite.
Etymology: abbr. 3. v. colloq.
1. intr. (of coffee) percolate, make a bubbling sound in the percolator.
2 tr. percolate (coffee).
Etymology: abbr. of PERCOLATE