- 1. n. The outer layer of bark. Source: opted
- 2. n. The hard outer covering of hydroids and other marine animals; the perisarc. Source: opted
- 3. 1. (Bot.) The outer layer of bark. 2. (Zoöl.) The hard outer covering of hydroids and other marine animals; the perisarc. Source: webster
- 4. n. The outer layer of bark. n. The hard outer covering of hydroids and other marine animals; the perisarc. Source: ecdict
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