A noisemaker or musical instrument where sound is generated by a board striking against a rotating gear. See gragger, raganella.
A pawl, click, or detent for holding or propelling a ratchet wheel, or ratch, etc.
A procedure or regulation that goes in one direction, usually up.
A ratchet wrench.
A mechanism composed of a ratchet wheel, or ratch and pawl.
Ghetto; unseemly, indecorous.
To increment or decrement.
To cause to become incremented or decremented.
An electronic speaker designed to produce high-frequency sound.
One who or that which makes a tweeting noise.
One who posts messages ("tweets") on the social networking site Twitter.