Tiny insect that casts spells? Crossword Clue

Today's (17 August 2018) crossword provided to us by The Washington Post and the clue is "Tiny insect that casts spells?".
The right answer or rather the best answer listed below:

Definition of "COVENANT"

an agreement

Example :

there was a covenant between them that her name was never to be mentioned

the landlord covenants to repair the property

the company have covenanted £1,000 a year to the Law Library

 The Crossword clue "Tiny insect that casts spells?" published 2 time/s & has 1 answer/s. 

Crossword	Date	Answer
The Washington Post	17 August 2018	COVENANT
L.A. Times Daily	17 August 2018	COVENANT