ˈtüthiŋ, -üth-, -ēŋ noun
( -s )
Etymology: in sense 1, from tooth (I) + -ing; in sense 2, from gerund of tooth (II)
1.
a. : an arrangement, formation, or projection consisting of or containing teeth or parts resembling teeth : indentation , serration
b. : an arrangement of bricks alternately projecting at the end of a wall to permit bonding into a later continuation of the wall
2. : the act or process of furnishing with teeth or a tooth