Bachelor’s

bachelor’s degree.
an unmarried man.
a person who has been awarded a bachelor’s degree.
a fur seal, especially a young male, kept from the breeding grounds by the older males.
also called bachelor-at-arms. a young knight who followed the banner of another.
also called household knight. a landless knight.
noun

an unmarried man
(as modifier): a bachelor flat

a person who holds the degree of bachelor of arts, bachelor of education, bachelor of science, etc
the degree itself

also called bachelor-at-arms. (in the middle ages) a young knight serving a great n-ble
bachelor seal, a young male seal, esp a fur seal, that has not yet mated
n.

c.1300, “young man;” also “youthful knight, novice in arms,” from old french bacheler (11c.) “knight bachelor,” a young squire in training for knighthood, of uncertain origin, perhaps from medieval latin baccalarius “v-ssal farmer,” one who helps or tends a baccalaria “section of land.” or from latin baculum “a stick,” because the squire would practice with a staff, not a sword. meaning evolved from “knight in training” to “young unmarried man” (early 14c.). bachelor party as a pre-wedding ritual is from 1882.