a quavering or vibratory sound, especially a rapid alternation of sung or played notes

the caged bird launched into a piercing trill

produce a quavering or warbling sound

a skylark was trilling overhead

‘Coming sir,’ they both trilled

trilling a love ballad, she led him to her chair

(in African American usage) genuine and authentic, especially as a result of being rooted in urban subculture

they knew they were going to grind hard and get rich and they did it. They also stayed trill in the process

the five track extended play offers up some of the trillest records yet