the point of a pin.

a trifle; pinhead.

a tiny spot or sharp point.

to locate or describe exactly or precisely

to pinpoint the problem.

exact; precise

pinpoint accuracy.

verb

be ambiguous , lose

verb

determinate , diagnose , distinguish , finger * , get a fix on , home in on , identify , place , recognize , spot , locate , aim , exact , finger , fix , point , precise

noun

dash , dot , fleck , speck , spot