navaja

The navaja is a Spanish fighting knife that first appeared around the 17th century. It is a very large flick knife with a locking blade or in some modern examples a switchblade. These knives are usually highly stylized and ornamental consisting of elaborate handle designs of bone, ivory, gold or other various metals.
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n. jackknife; pocket knife

n. Navajo, North American Indian tribe residing mostly in northern New Mexico and Arizona; language of the Navaho tribe (also Navaho)

= penknife [penknives].
Ex: The exhibition 'Out of the woodwork: On the history of tartanware' displays boxes, frames, penknives and other objects decorated with a distinctive tartan pattern and manufactured in Scotland in the 19th c.
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* tallar con una navaja = whittle.