the 14th letter of the English alphabet. a graphic representation of this letter. a speech counterpart of orthographic n. a graphic device for reproducing the letter n. one designated n especially as the 14th in order or class. an indefinite number. something shaped like the letter N. the haploid or gametic number of chromosomes. EN sense 1. name. nano-. navy. net. neuter. neutron. noon. normal. north; northern. note. noun. number. naira; nairas. newton. nitrogen. see -EN entry 1.