A shrill sound.
To make a shrill noise.
Sharp or keen to the senses.
Having a shrill voice.
Fierce, loud, strident.
High-pitched and piercing.
The common European bittern.
A musical instrument in the brass family, having a cylindrical bore, and usually a sliding tube (but sometimes piston valves, and rarely both). Most often refers to the tenor trombone, which is the most common type of trombone and has a fundamental tone of B♭ˌ (contra B♭).
A kind of extendable support for attaching lighting elements to a set.
To extend and retract (the zoom lens); to use it too enthusiastically.
To transmit a signal or data back to a central switching point before sending it out to its destination.