Entry 3 senses · 2 variants Webster, 1913 Sollar · Sol·lar · IPA n. v. t. 01 n. See Solar, n. 1. See Solar, n.[Obs.] See: Solar 2. A platform in a shaft, especially one of those between the series of ladders in a shaft.(Mining) 02 v. t. To cover, or provide with, a sollar. 1. To cover, or provide with, a sollar.