n (obsolete) A weight of twenty grains; the third part of a dram.
n (obsolete) Hence, a very small quantity; a particle.
n Hesitation as to action from the difficulty of determining what is right or expedient; unwillingness, doubt, or hesitation proceeding from motives of conscience; to consider if something is ethical.
n (obsolete) A doubt or uncertainty concerning a matter of fact; intellectual perplexity.
n A measurement of time. Hebrew culture broke the hour into 1080 scruples.
v (intransitive) To be reluctant or to hesitate, as regards an action, on account of considerations of conscience or expedience.
v To regard with suspicion; to hesitate at; to question.
v (obsolete) To doubt; to question; to hesitate to believe; to question the truth of (a fact, etc.).