From
www.m-w.com :
Main Entry: 4 sear
Function:
noun
Etymology: probably from Middle French
serre grasp, from
serrer to press, grasp, from Late Latin
serare to bolt, latch, from Latin
sera bar for fastening a door
Date: 1596
: the catch that holds the hammer of a gun's lock at cock or half cock
[This message has been edited by Slowpoke_Rodrigo (edited June 20, 2000).]