by the rood

archaic

(archaic) Used as an oath to emphasize the veracity of an associated statement.

Japanese Meaning

（古語）ある発言の真実性を強調するために、誓いや驚きを表す際に用いられる表現 / （古語）「本当に」「誠に」といった意味合いを強調するための誓言のフレーズ

I tell you, by the rood, I have spoken nothing but the truth.

十字架にかけて誓うが、私はあなたに真実以外何も話していない。

Sense（1）

(archaic) Used as an oath to emphasize the veracity of an associated statement.

Sim[on]. I pray thee tell me now, coulde such a shrow as thou,

Content thy selfe with such a sheepe as I, how sayst thou now?

Sus[an]. A sheepe, nay by the Roode, I rather would haue guest

you, more a Hog like, then a sheepe […]