Real Dictionary

conk in American English 1
the nose
to hit on the head
noun: the head
transitive verb: to hit or strike on the head

conk in American English 2
a shelflike growth of fungus found on various trees, usually on the trunk
intransitive verb: to break or fail, as a machine or engine

conk in American English 3
a hair style, as worn by some blacks, in which the hair is straightened, as with lye, and smoothed down
to straighten and arrange hair thus
noun: the shelflike fruiting body of certain wood-decaying fungi

conk in American English 4
noun: a method of chemically straightening the hair
transitive verb: to straighten (kinky hair) by the use of chemicals

conk in British English
noun: a punch or blow, esp on the head or nose
verb: to strike (someone) a blow, esp on the head or nose