fathom

/หˆfรฆรฐษ™m/

IPA: /F AE1 DH AH0 M/

noun
  1. 1

    Grasp, envelopment, control.

  2. 2

    (now usually nautical) An English unit of length for water depth notionally based upon the width of grown man's outstretched arms but standardized as 6 feet (about 1.8 m).

  3. 3

    Various similar units in other systems.

  4. 4

    Depth of insight, mental reach or scope.

verb
  1. 1

    To encircle with outstretched arms, especially to take a measurement; to embrace.

  2. 2

    To measure the depth of, take a sounding of.

  3. 3

    To get to the bottom of; to manage to comprehend; understand (a problem etc.).

    โ€œI can't for the life of me fathom what this means.โ€

Source: https://en.wiktionary.org/wiki/fathom