Sure you can maybe rationalize it a bit and translate it as blade because Whitebeard's weapon isn't a sword, but if anything that would just prove that Oda is nowhere near as pedantic and simply considers any weapons he wishes as being potential Meito, and to add to that, I would hardly consider a lance to be a bladed weapon, it has a sharp point, if you consider that a bladed weapon you may as well consider Kaido's club as one given it has pointed spikes on it lmfao.
Also, if we're saying the real life Wazamono are a 1-1 to One Piece's Meito, well, the real life Wazamono are entirely and specifically comprised of swords, no polearms, daggers, tridents or whatever at all, so again, it shows that Oda simply doesn't care to be so hyper specific and simply does whatever he wants to.
Also, if we're saying the real life Wazamono are a 1-1 to One Piece's Meito, well, the real life Wazamono are entirely and specifically comprised of swords, no polearms, daggers, tridents or whatever at all, so again, it shows that Oda simply doesn't care to be so hyper specific and simply does whatever he wants to.
Btw databooks suck