(golf) A handicap of one stroke every second hole.

As far as concerns one.

(UK, military, slang) A first lieutenant in the navy.

With the consent of all; unanimously.

Synonym of for one's life

A carnival freak show that presents numerous exhibits in the same location.

plural of ten-in-one

(automotive) The first finished, saleable car of a new model to come off the production line.

Having come to the end of one's resources. / Used other than figuratively or idiomatically: see on, one's, back.

plural of try-on