A reed used singly in many wind instruments, which vibrate to produce a sonorous sound.

consisting of a single organism / of or pertaining to a single organism

Used other than figuratively or idiomatically: see single, money. / (obsolete) change, small coins

(computing, telecommunications) Of a operating system, etc., only capable of serving one user at a time, not many users simultaneously.

(computing) Of software, etc., designed to work on only one operating system.

(computing) Of a operating system, etc., only capable of execution of one task (program or app) at a time, not many tasks simultaneously.

a trade bloc with some common product-regulation policies in which most trade barriers have been removed

plural of lead single

plural of single bond

plural of single file