An opening in an organ.
A gap in a series, making it incomplete.
A gap in geological strata.
A syllable break between two vowels, without an intervening consonant. (Compare diphthong.)
An unexpected break from work.
An interruption, break or pause.
A small opening or orifice, as in a body organ or passage.
Any of the small openings or pores in a sponge.
The mouth of a river.