to make an effort; to try hard; to exert oneself toward a goal

(King) Norodom Sihanouk of Cambodia

Nurhaci (1559-1626), founder and first Khan of the Manchu Later Jin dynasty (from 1616)

Viktor Feyedov Yanukovych (1950-), Ukrainian politician

Snoopy (comic strip pet dog)

Vanuatu, country in the southwestern Pacific Ocean

to thrust out one's lips as an expression of displeasure, annoyance, or sulking

Nuku'alofa, capital of Tonga

Nouakchott, capital of Mauritania

Baikonur (Russian space launch site in Kazakhstan)

Chinook (helicopter)

Cotonou (city in Benin)

Chinook (helicopter)

Nuuk, capital of Greenland

Ainu (ethnic group of northern Japan and eastern Russia)

Nouméa, capital of New Caledonia

Hanukkah (Chanukah), an eight-day Jewish holiday starting on the 25th day of Kislev (typically occurring between late November and late December)

if you are lazy in your prime, you'll be sorry in your old age

Nunavut territory, Canada

Nuku'alofa, capital of Tonga

to exert oneself or put forth physical or mental strength to achieve a goal

To use one's best efforts to do something.

to push out the lips, often to express emotion or to indicate a direction

Swiss mathematical family (including Johann and Daniel)

An eight-day Jewish holiday starting on the 25th day of Kislev, also known as the Festival of Lights or Chanukah.

to increase the level of intensity or work put into an activity; to try harder or redouble one's efforts