The Collaborative International Dictionary of English v.0.48:

Pectinal \Pec"ti*nal\, a. [L. pecten comb. See Pectinate.]
   Of or pertaining to a comb; resembling a comb.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pectinal \Pec"ti*nal\, n.
   A fish whose bones resemble comb teeth. --Sir T. Browne.
   [1913 Webster] Pectinate