"lidless" in the adjective sense
1. lidless
not having or covered with a lid or lids
"a lidless container"
2. lidless
having no lid
"a lidless container"
3. lidless, sleepless
always watchful
"to an eye like mine, a lidless watcher of the public weal"- Alfred Tennyson
Source: WordNet® (An amazing lexical database of English)
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