1. A forceful consequence.
2. The striking of one body against another.

ETYM Latin impactio a striking; cf. French impaction.
Obstruction, or lodgement of matter, in passage.
A condition in which a tooth is so crowded in its socket that it cannot erupt normally; SYN. impacted tooth.

Woof; woven thing; web; film.

ETYM Old Eng. oof, AS. ôwef, ôweb, âweb; on, an, on + wef, web, from wefan to weave. The initial w is due to the influence of Eng. weave. Related to On, Weave, Abb.
The thread woven across the warp yarn in weaving; SYN. weft, filling, pick.
Threads crossing warp in weaving; weft.