Old English ac.
ac
āc (plural āc ihqueh, āquihqueh)
ac
From Germanic *aik-. Cognate with Old Frisian ēk, Old Saxon ēk (Dutch eik), Old High German eih (German Eiche), Old Norse eik (Swedish ek).
āc f. (plural ǣċ)
From Germanic *ak-. Cognate with Old Saxon ac, Gothic 𐌰𐌺, Old High German oh.
ac
Latin acus
ac f. and m.