(idiomatic) To do something difficult, frustrating, or pointless.

Third-person singular simple present indicative form of get blood from a stone

simple past tense and past participle of get blood from a stone

present participle of get blood from a stone

(idiomatic) To criticize others when one have similar weaknesses oneself.

Many minor influences gradually produce a significant effect.

(idiomatic) To solve two problems with one single action.

Third-person singular simple present indicative form of kill two birds with one stone

present participle of kill two birds with one stone

simple past tense and past participle of kill two birds with one stone