Iswas

noun, slang

noun, slang ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A kind of hand-held slide rule used for predicting the location of a target based on its current and recent positions. historical, no-plural, slang

Etymology

From is + was, i.e. for calculating where the target will be based on where it is and was.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.