noun

1. The sweet flag, Acorus calamus.

2. A quill; the hard, horny, hollow, and more or less transparent part of the stem or scape of a feather.

noun

1. An abnormal connection or passageway between organs or vessels that normally do not connect.

2. A tube, a pipe, or a hole.

3. The tube through which the wine of the Eucharist was once sucked from the chalice.

Synonyms: pipe, tube, calamus