(rare) To fly in a monoplane.

A vowel (in the sense of a sound rather than a letter of the alphabet) that has the same sound throughout its pronunciation, such as the short vowels in "pap", "pep", "pip", "pop" and "pup", as opposed to a diphthong (eg, /aɪ/, the vowel in "pipe") or a triphthong (eg, /aɪə/, the sound in the non-rhotic pronunciation of "pyre").

Having one eye. / Related to a monocle. / Of any optical system suitable for use by one eye at a time.

(rare) A monocle. / (retronym) A monocular telescope, as opposed to binoculars.

a railroad system where the trains run on one rail / a train running on a single rail

(art, printing) A print made by creating the design using oil paint or printer's ink on metal or glass, then transferring the image directly to paper.

(transitive) To produce a monotype of.

Being or relating to a polynomial consisting of one term.

(mathematics) A single term consisting of a product of numbers and variables with positive integer exponents.

(American spelling) Alternative form of monologue