Definitions
1.nounA front, or a boundary between opposing positions.
2.nounA site of a conflict, effort, or controversial matter of any kind.
3.nounThe site of interaction with outsiders, such as customers.
4.nounA low level.
5.nounAttack, collectively the attackers or forwards.
6.adjectiveLocated at a front
7.adjectiveMost advanced or important