watermelon

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From the 1610s, a compound of water +‎ melon.

The meanings referring to environmentalists and behind-schedule projects derive from the idea of having a green (eco-friendly, on-schedule) outward appearance while being red (socialist, behind schedule) in a hidden way comparable to that of the fruit.

• (UK) IPA^(key): /ˈwɔːtəˌmɛlən/
• (US) IPA^(key): /ˈwɔtɚˌmɛlən/, /ˈwɑtɚˌmɛlən/
• (Ireland) IPA^(key): /ˈwɒːt̞ɚˌmɛlən/
  • (Dublin) IPA^(key): /ˈwaːhɐˌmɛlən/, /ˈwaːʔɐˌmɛlən/, /ˈwaːʔɚˌmɛlən/
  • (Ulster) IPA^(key): /ˈwɔːɾɚˌmɛlən/

• Audio (US):

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watermelon (countable and uncountable, plural watermelons)

2. A plant of the species Citrullus lanatus, bearing a melon-like fruit.
4. The fruit of the watermelon plant, having a green rind and watery flesh that is typically bright red when ripe and contains black seeds.
5. (derogatory, slang) An environmentalist with socialist leanings, an ecosocialist.
   • 2010 August 7, Robin McKie, “Merchants of Doubt by Naomi Oreskes and Erik M Conway”, in The Observer‎^[1], →ISSN:

     According to this distorted view of life, environmentalists are watermelons – green on the outside, red on the inside – who want to impose regulation, “the slippery slope to socialism”, on the use of tobacco, ozone-destroying chemicals and greenhouse gases.

7. A pinkish-red colour, like that of watermelon flesh (also called watermelon pink).

   watermelon:  

8. A project that is presented as on schedule when it actually has parts that are falling behind.
   • 2011 August 8, Marc Löffler, “Watermelon Reporting”, in DZone‎^[2], AnswerHub:

     The nuts and bolts of any project are transparency. If the project status is transparent, the watermelons can’t arise. If anybody is able to get the information, it will be difficult to hide something.

   • 2015 September 17, Ken Burrell, “Watch out for watermelons in project reports”, in LinkedIn‎^[3]:

     As a PMO [project management officer], wherever I see watermelon reporting, I encourage the PM [project manager] to be brave and honest enough to ask for help.

   • 2021 April 24, Sumir Karayi, “Combatting the Watermelon Effect to Improve Digital Experience”, in CIO‎^[4], IDG Communications, archived from the original on 5 June 2021:

     [see title]

9. (colloquial, slang) A breast, especially that of an adult or adolescent female human.

• See Thesaurus:breasts

• lemonwater, water lemon, lemon water