Toc"sin (?), n. [F., fr. OF. toquier to touch, F. toquer (originally, a dialectic form of F. toucher) + seint (for sein) a bell, LL. signum, fr. L. signum a sign, signal. See Touch, and Sign.] An alarm bell, or the ringing of a bell for the purpose of alarm.

The loud tocsin tolled their last alarm.

Toc"sin (?), n. [F., fr. OF. toquier to touch, F. toquer (originally, a dialectic form of F. toucher) + seint (for sein) a bell, LL. signum, fr. L. signum a sign, signal. See Touch, and Sign.] An alarm bell, or the ringing of a bell for the purpose of alarm.

The loud tocsin tolled their last alarm.

• 
       
• an alarm bell
       
• the ringing of a bell for the purpose of alarm.
  
• a sign or omen; a portent