The first letter of the English alphabet, written in the Latin script.

The ordinal number first, derived from this letter of the English alphabet, called a and written in the Latin script.

The name of the Latin script letter A / a.

An unspecified example of (something); the indefinite article.
One; used before score, dozen, hundred, thousand, million, etc.
Used in some phrases denoting quantity, such as a few, a good many, a couple, a little, a bit, etc.
Used in some phrases denoting quantity, such as a few, a good many, a couple, a little, a bit, etc.
Used in some adverbial phrases denoting the degree or extent of an action, such as a little, a bit, a lot, etc.
The same; one and the same. Used in phrases such as of a kind, birds of a feather, etc.
Any; every; used before a noun which has become modified to limit its scope.
Any; used with a negative to indicate not a single one.
Used before an adjective that modifies a noun (singular or plural) delimited by a numeral.
One; someone named; used before a person's name, suggesting that the speaker knows little about the person other than the name.
Used before an adjective modifying a person's name, typically used to emphasize that person's current condition or emotional state.
Someone or something like; similar to; used before a proper noun to create an example out of it.

To do with separation; In, into.
To do with time; Each, per, in, on, by. Often occurs between two nouns, where the first noun occurs at the end of a verbal phrase.
To do with status; In.
(archaic) To do with position or direction; In, on, at, by, towards, onto.
(archaic) To do with process, with a passive verb; In the course of, experiencing.
(archaic) To do with an action, an active verb; Engaged in.
(archaic) To do with an action/movement; To, into.
(obsolete) To do with method; In, with.
(obsolete) To do with role or capacity; In.

Of.

All.

Pronunciation spelling of to.

Used to express a future action; going to.

Contraction of and.

Alternative form of -a (“empty syllable added to songs, poetry, verse and other speech”).

The name of the Cyrillic script letter А / а.

ah; er (sound of hesitation)

a word-initial letter ⟨a⟩.
the long vowel /eɪ/ at the end of a word, or before a final consonant that is not /dʒ, v, z/. (Note: the final consonant is not written; [ɛə˞] counts as /eɪr/.)
the word a.m.
the prefix ad-.

The fourth semiquaver (sixteenth note) of a beat.