What is the meaning of Herða?

to harden, to strengthen, to toughen (to make stronger or harder, e.g. metal)

to tighten, to intensify (e.g. one's grip, one's pace, security precautions, etc.}}

to hurry up

to cause to strengthen [with preceding accusative ‘wind or other weather phenomena’]

to make hard, temper

to press, clench

to make firm, exhort

to follow, closely, pursue vigorously

to harden [with accusative]

to take heart

tempering

hardness, severity

indefinite genitive plural of herað

indefinite genitive plural of herðr

inflection of herðr:

1. strong feminine accusative singular
2. strong masculine accusative plural
3. weak masculine oblique singular
4. weak feminine nominative singular
5. weak neuter singular

strong feminine accusative singular

strong masculine accusative plural

weak masculine oblique singular

weak feminine nominative singular

weak neuter singular

Source: wiktionary.org