butt

take a bull by the horns, fight against heavy odds

knock against

confrontation, challenge, someone equal in stature or power, opponent

knock against, strive, try, compete, contest

to be dashed (against), collide

be knocked, be injured in collision, to knock (against)

to confront, oppose, challenge, encounter, contend (with)

to suffer a blow, meet a shock, endure hardship, trials, to bear up against loss, calamity, to stand aghast

to collide with, dash against

by targeting, by selecting an object with attention, by looking for an opportunity

evenly matched, of the same ilk

gag, put hold to an argument

equally good, evenly matched, comparable

Fire-stone.