Any ammonite of the order Clymeniida

An advance or movement made from one foot to the other; a pace. / A rest, or one of a set of rests, for the foot in ascending or descending, as a stair, or a rung of a ladder.

(US politics) The day in February or March on which a large number of states hold their primary elections for the process of nominating presidential candidates.

The quality or property of being untranslatable; inability to be translated.