Lit. , once , a single time (but cf.: si semel, infra, II. B. 2 fin. : sol omni terrarum ambitu non semel major, not greater by once , i. e. not as large again , not twice as large ; also without quam : plus semel, more than once : Janum Quirinum semel atque iterum clausum, once and again , i. e. twice ; but also in a more gen. sense: pecuniam semel atque iterum dare coacti sunt, time and again , i. e. repeatedly ; Greg. M. Ep. 5, 18 fin.
http://lila-erc.eu/data/lexicalResources/LewisShort/id/LexicalSense/n43412.0 an entity of type: LexicalSense
Lit. , once , a single time (but cf.: si semel, infra, II. B. 2 fin. : sol omni terrarum ambitu non semel major, not greater by once , i. e. not as large again , not twice as large ; also without quam : plus semel, more than once : Janum Quirinum semel atque iterum clausum, once and again , i. e. twice ; but also in a more gen. sense: pecuniam semel atque iterum dare coacti sunt, time and again , i. e. repeatedly ; Greg. M. Ep. 5, 18 fin.
Lit. , once , a single time (but cf.: si semel, infra, II. B. 2 fin. : sol omni terrarum ambitu non semel major, not greater by once , i. e. not as large again , not twice as large ; also without quam : plus semel, more than once : Janum Quirinum semel atque iterum clausum, once and again , i. e. twice ; but also in a more gen. sense: pecuniam semel atque iterum dare coacti sunt, time and again , i. e. repeatedly ; Greg. M. Ep. 5, 18 fin.