From Wiktionary, the free dictionary

hars

1. plural of har

• AHRS, Rash, SHRA, Sahr, rahs, rash

From Middle Dutch hars, harst, from Middle High German harz (modern German Harz), from Old High German harz, from Proto-West Germanic *hart, from Proto-Germanic *hartą.

• IPA^(key): /ɦɑrs/
• Hyphenation: hars
• Rhymes: -ɑrs

hars m or n (plural harsen, no diminutive)

1. resin

• gomhars
• harsen
• kunsthars

• van der Sijs, Nicoline, editor (2010), “hars”, in Etymologiebank, Meertens Institute

hars

1. alternative form of ars

hars n

1. alternative form of hors