tinder

noun1

1. •
   Small dry sticks and finely-divided fibrous matter etc., used to help light a fire.

   • Strike on the Tinder, hoa: / Giue me a Taper: […] — 1603

verb1

1. •
   To set fire to; torch.

   • Is heaven a murderer when its lightning strikes a would-be murderer in his bed, tindering sheets and skin together? — 1851

verb1

1. •
   To use the dating application Tinder.