UBS Dictionary of the Greek New Testament

Sense 1: bull, ox, cow, cattle

Semantic entry: 4.15

Semantic domains: Animals

Subdomains: Animals

Definition: general word for individual cattle; may be male (bull or ox) or female (cow); plural: cattle

Notes: In most contexts βοῦς (masc. gender) would seem to refer to an ox (in contrast with ταῦρος ‘bull,’ 4.16: ταῦρος). In the plural form βοῦς may be translated simply as a collective ‘cattle.’|Though in a number of languages a very special distinction is made between ‘bulls’ and ‘oxen’ (or ‘steers’), no such marked difference occurs in NT usage, and there appears to be no need of introducing any artificial distinction in particular passages.

Further resources: fauna:2.10