Found 2 items, similar to Pectoral fins.
English → English (WordNet) Definition: pectoral fin pectoral fin n : either of a pair of fins situated just behind the head in fishes that help control the direction of movement
English → English (gcide) Definition: Pectoral fins Pectoral \Pec"to*ral\ (p[e^]k"t[-o]*ral), a. [L. pectoralis, fr. pectus, -oris the breast; cf. F. pectoral.] 1. Of or pertaining to the breast, or chest; as, the pectoral muscles. [1913 Webster] 2. Relating to, or good for, diseases of the chest or lungs; as, a pectoral remedy. [1913 Webster] 3. (Zo["o]l.) Having the breast conspicuously colored; as, the pectoral sandpiper. [1913 Webster] Pectoral arch, or Pectoral girdle (Anat.), the two or more bony or cartilaginous pieces of the vertebrate skeleton to which the fore limbs are articulated; the shoulder girdle. In man it consists of two bones, the scapula and clavicle, on each side. Pectoral cross (Eccl.), a cross worn on the breast by bishops and abbots, and sometimes also by canons. Pectoral fins, or Pectorals (Zo["o]l.), fins situated on the sides, behind the gills. See Illust. under Fin. Pectoral rail. (Zo["o]l.) See Land rail (b) under Land. Pectoral sandpiper (Zo["o]l.), the jacksnipe (b) . [1913 Webster]