A child of a second cousin. / A second cousin of a parent.

A first cousin's child. / A parent's first cousin.

One is cautious if one has been hurt in the past.

Alternative form of measure twice and cut once

(carpentry, literally) One should double-check one's measurements for accuracy before cutting a piece of wood; otherwise it may be necessary to cut again, wasting time and material.

plural of first cousin once removed

plural of second cousin once removed

Synonym of once a man, twice a child

(rare) A woman is born as a child, later enters adulthood, and consequently enters old age, when her body and mind start to deteriorate to the point where she can no longer care for herself.

A man is born as a child, grows to adulthood, and consequently enters old age, when he deteriorates and reverts to a childish state.