[no passive] used for making suggestions or as a polite way of telling people what you want them to do. 'Shall we check it again?' 'Yes, let's.

that is available to rent. a long-term/short-term let. Similar barns had been converted to holiday lets.

to allow someone to do something or something to happen without trying to stop it. let somebody/something do something. Let them splash around in the pool for ...

There is one meaning in OED's entry for the adjective let. See 'Meaning & use' for definition, usage, and quotation evidence.

Definition of let noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Definition of -let suffix from the Oxford Advanced Learner's Dictionary. -let suffix /lət/ /lət/ (in nouns) small; not very important.

suffix. suffix. /lət/ (in nouns) small; not very important booklet piglet starlet.

There are seven meanings listed in OED's entry for the verb let, five of which are labelled obsolete. See 'Meaning & use' for definitions, usage, and quotation ...

Definition of let's in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

​(informal) to tell a secret. I'm getting married next week, but please don't let on to anyone. let on (to somebody) that… She let on that she was leaving.