adjective
rareOf, relating to, or characteristic of the Peak District in Derbyshire.
In early use apparently sometimes more generally: rough, remote, wild.
Origin
Late 16th century; earliest use found in William Warner (d. 1609), poet and lawyer. From Peak + -ish.
adjective
rareSomewhat peaked or pointed; characterized by peaks.
Origin
Mid 18th century; earliest use found in William Ellis (c1700–1758), agriculturist and writer. From peak + -ish.
adjective
informal, dialectSomewhat sickly; pinched, unhealthy.
Origin
Mid 19th century; earliest use found in Benjamin Smart (d. 1872), elocutionist and grammarian. Probably alteration of peaky, with suffix substitution.
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