Fathom or Fadom (the latter the more usual orthography) subst. 1) a measure of length containing six feet, used to measure deeps: “f. and half,” Lr. III, 4, 37. Unchanged in the plur.: Tp. I, 2, 396. As IV, 1, 210. All's IV, 1, 63. Wint. IV, 4, 281. H8 II, 1, 51. Rom. I, 4, 85. Lr. IV, 6, 50. Plur. “--s:” Tp. V, 55. Troil. I, 1, 50. Hml. I, 4, 77.
2) depth: “for all . . . the profound sea hides in unknown --s,” Wint. IV, 4, 502.
3) reach, penetration (in the language of the seaman Iago): “another of his f. they have none,” Oth. I, 1, 153.