It means to use a weapon.
yes you can just because a tachi sword is longer than a katana doesn't mean you can't dual wield it.
Yes a hunter can Dual-Wield.
You can't wield a fox on RuneScape... LOL never dude
In order to wield dragon weapons, you need to have high enough levels (usually level 60) and in most cases a quest. To wield different weapons, you need to do different quests. For instance: to wield dragon long-swords or daggers, you need to do the lost city quest. but in order to wield the dragon scimitar, you need to do the monkey madness quest. The runewiki has a list of the quests required to wield the different dragon weapons.
It means put them away, the opposite of take out your swords and wield them against another person.
Depending on context, "exercise" can mean train, apply, wield, exert, etude
Wyatt is destined to wield the powerful sword Excalibur
David Wield has written: 'Forging the links' 'Implementing New Technologies'
Weald
Yes, from level 20 on a Hunter can learn to dual-wield weapons from his trainer. You can dual wield any one-handed weapon the hunter has proficiency in. Hunters cannot learn to use 2 guns, or dual-wield 2-handed weapons.
In Modern Warfare 2 the dual wield term was "Akimbo"
You cannot, you can equip a dual wield weapon, or a sword and shield, which is still a dual wield weapon. You cannot equip a dagger and a sword at the same time though, unless of course it is a dual wield wield weapon. (One bag slot)