Span is an older strong past tense form of spin — this is the past tense form that existed in the older Germanic ancestors of English. In German, for example, the past tense of spinnen is still spann. In English, span has mostly fallen out of use in favor of spun for both the past participle and simple past forms.

How do you say spin in past tense?

Spun is the past tense and past participle of spin.

What is the past tense of spin down?

The past tense of spin down is spun down. The third-person singular simple present indicative form of spin down is spins down. The present participle of spin down is spinning down. The past participle of spin down is spun down.