Pi"le*us (?), n.; pl. Pilei (#). [L., a felt cap.]

1. Rom. Antiq.

A kind of skull cap of felt.

2. Bot.

The expanded upper portion of many of the fungi. See Mushroom.

3. Zool.

The top of the head of a bird, from the bill to the nape.

 

© Webster 1913.

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