amitate

v. t.

[L. amittere, amissum, to lose; a (ab) + mittere to send. See Missile.]
To lose. [Obs.]

A lodestone fired doth presently amit its proper virtue.

Sir T. Browne.

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[ab L. amita, paternal aunt]
1) a special relationship obtaining among some peoples between a niece and her paternal aunt
2) the authority of a woman over her brother's children and the rights and responsibilities associated therewith--compare avunculate