资料来源 : Webster's Revised Unabridged Dictionary (1913)

Phacellus \Pha*cel"lus\, n.; pl. {Phacelli}. [NL., fr. Gr. ? a
   bundle of fagots.] (Zo["o]l.)
   One of the filaments on the inner surface of the gastric
   cavity of certain jellyfishes.