There are 2 definitions of roll on in English:

roll on1

[in imperative] British informal Used to indicate that one wants a particular time or event to come quickly: roll on January!
More example sentences
  • So roll on the blockbuster season and another round of Lara Croft shoot-em-ups!
  • Roll on next Tuesday.
  • Roll on next year!
See parent entry: roll

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Word of the day dinkum
Pronunciation: ˈdɪŋkəm
adjective
(of an article or person) genuine, honest, true

There are 2 definitions of roll on in English:

roll-on2

Line breaks: roll-on

adjective

Denoting a deodorant or cosmetic applied by means of a rotating ball in the neck of the container.
More example sentences
  • Nowadays, I leave Britain armed with insect repellant of the plug-in type, plus spray, plus personal roll-on repellant.
  • The slick matte silver tube features a roll-on top for easy application, tip protection during recapping and overall protection in the bag or purse.
  • See-through color and a fuss-free roll-on tube make this one perfect for fast mirror-free applications that leave a high shine.

noun

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1A roll-on deodorant or cosmetic.
More example sentences
  • In late 2002, whitening products also found their way into deodorant roll-ons in Indonesia.
  • A good deodorant (solid or roll-on are best, particularly if flying) is an absolute must, unless the ‘natural scent’ and stained pits have become a big fashion statement.
  • Deodorants and Antiperspirants are sold as aerosols, roll-ons, and sticks.
2British A light elastic corset.

Definition of roll on in: