Putting forth one's best efforts.

plural of one-legged

plural of pull-on

(transitive, history) To inflict the 1454 famine on.

plural of sixty-one

As much as one can take.

Synonym of up one's sleeve

A poker hand that contains two cards of one rank, plus three cards which are not of this rank nor the same as each other.

(simile, literary) In a unified manner.

plural of pee-on